How to Repair a Camper Travel Trailer Electrical System

Updated on March 25, 2016
Randy Godwin profile image

Randy is a lifelong lover of the outdoors and especially camping. This article is intended to help the RVer save money and time on repairs.

Source

Electrical System Design

Most RV’s and camper trailers utilize the same types of electrical systems as those used for an average small home. But in addition to the 110 volt electrical supply, there may also be lights, fans, a refrigerator, or other electrical devices which use a 12 volt supply, like that of a car or truck.

A 12-volt DC system powers the RV refrigerator to keep food cold while the RV or camper trailer is moving from place to place. The same goes for the lights and fans. It also keeps the on-board batteries fully charged. This system relies on the 110-volt AC electrical power supply for amperage.

It is possible to pull a 12-volt power supply from the RV or camper trailer's electrical system or 110-volt campsite power supply. Then the 110-volt supply can be stepped down to 12 volts after it is run through a power converter and to a particular appliance.

Rewiring a Classic RV

A classic 1946 Spartan travel trailer.
A classic 1946 Spartan travel trailer. | Source

Most of RV systems will switch from the 110-volt AC to the 12 volt DC supply automatically when there is a power interruption. These two electrical systems are treated independently from each other when diagnosing electrical problems, except for determining power to the converter. This translates to:

  • 110 volt power-- > converter-- > 12 volt power-- > 12 volt breaker box -- > refrigerator or lights

As in a home, the 12-volt system has its own set of breakers to control each circuit. The lights, fans, or refrigerator may each be on their own circuits, depending on the amperage required. If the converter is supplying 12 volts to the breaker panel and the breakers test positive for voltage, this leaves the wiring or the particular appliance at fault.

A 1956 Serro Scotty classic.
A 1956 Serro Scotty classic. | Source

Essential Tools and Resources

  • If you are not familiar with electrical wiring or troubleshooting electrical systems there are some very good books available to help you understand and repair common RV electrical problems. I would recommend RV Electrical Systems: A Basic Guide to Troubleshooting, Repairing and Improvement to any novice and experienced electrician alike. It will be an enormous aid to understanding RV electrical systems.
  • Another must for tracing down electrical problems is a voltage meter. This handy tool will allow you to check the circuits for continuity and for the correct voltage required for each breaker. A simple test light can be used but will not test for broken circuits caused by bad wiring or other electrical problems. Both of these tools are inexpensive to own and will more than pay for themselves over time. The voltage meter can be used for home electrical problems as well as any other electrical related problem. Both are offered on this page for a reasonable price.

Troubleshooting Common 110-Volt Problems

  • The 110 volt outlets used in some RVs and camper trailers are prone to shorts because of the way they are installed. Some are merely clipped onto the wiring by cutting into the wires. These types are notorious for not working correctly. Replace these types of outlets with standard house types to put and end to loose connections. Since some of the walls are so thin, a smaller receptacle box may be required for the outlet to fit flush in the walls.
  • Ground fault interrupter outlets are another common cause of electrical problems. These are located in places where a possibility exists of someone touching them with wet hands. They automatically break the circuit when moisture comes in contact with the outlet to prevent shock to the person touching them. A simple reset button must be pressed for the circuit to once again be completed. On occasion they will need to be replaced or the other outlets on the line will not work either. Pay close attention to the instructions when replacing these GFIs.
  • In older RVs and camper trailers you may still find fuses instead of circuit breakers. Since the advent of many new electrical devices, these older fuse systems may not provide enough amperage to handle a microwave or other high amp appliance without blowing a fuse or kicking a breaker. Simply replacing the fuse or breaker with a higher amp substitute may be all that’s required. Replacement of the entire breaker box may be the only option remaining if this doesn’t solve the problem.
  • The newer RVs and camper trailers may have two RV A/C rooftop units which require more amperage than the older models to operate without kicking the standard 30-amp power supply used by many campgrounds. Fortunately, many campgrounds and RV parks now provide 50-amp service for these types of units. When making reservations or checking in, be sure to ask about the availability of a 50-amp hook-up if you own a unit with multiple A/C units.

Keeping your electrical systems in good and safe working order insures a trouble free camping trip with no sudden power outages to ruin the trip. Most problems can be repaired easily if you understand how the system works. RV electrical manuals along with a few inexpensive tools are well worth the cost of their purchase.

If you are completely confused by electrical wiring there are also some very good basic books to start you off. It isn’t very hard at all to check electrical circuits, switches or outlets with an inexpensive voltmeter. Just remember, when touching any wires be sure the power to that particular circuit is off. If in doubt, turn off the main breaker or unplug the RV or camper trailer from the power supply. Happy camping!

Replacement Power Converters

Progressive Dynamics PD9270V Inteli-Power 9200 Series Converter/Charger with Charge Wizard - 70 Amp
Progressive Dynamics PD9270V Inteli-Power 9200 Series Converter/Charger with Charge Wizard - 70 Amp

Power converters for all makes and models of motorhomes and camper trailers available.

 

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    • Randy Godwin profile imageAUTHOR

      Randy Godwin 

      2 days ago from Southern Georgia

      Brandon, have you checked the 110 volt power panel(breaker box) to see if power is getting to the main breaker?

      Randy

    • profile image

      Brandon 

      2 days ago

      I recently received a 1998 Skyline Layton 3090 travel trailer. It is a standard 30 amp circuit. I replaced the plug for a newer one. This is then plugged into a 30 amp outlet. I have checked the wire ends to make sure they are clean. I have yet to determine why I can't get power to the trailer. I'm leaning towards bad breakers, or faulty power center. Any ideas?

    • Randy Godwin profile imageAUTHOR

      Randy Godwin 

      13 days ago from Southern Georgia

      mudbug, you may have toasted the converter unless it has a fuse or reset button. Try connecting a good battery charger up and if everything works normally, then a new converter may be in your future.

      Randy

    • profile image

      muddbugg007 

      2 weeks ago

      Help please....OK im sure Im not the first.... I changed my battery out and made the mistake of crossing the terminals. apparently fried something in the system. my fridge and audio system now dont work.. I checked all fuses and breakers.. nothing found bad... 2013 Keystone Passport. **** all other DC systems work fine.. ****

    • profile image

      JustPat 

      3 weeks ago

      Thanks Randy. Looks like it was a bad ground. All is well now.

    • Randy Godwin profile imageAUTHOR

      Randy Godwin 

      3 weeks ago from Southern Georgia

      JustPat, make sure the negative battery cable is clean and tight where it attaches to the steel frame of the camper. A bad ground at this point will cause all sorts of problems with the 12 volt system.

      You should get at least 13 volts at the batteries if the converter is working properly. Hote this helps.

      Randy

    • profile image

      JustPat 

      3 weeks ago

      Hi Randy. I have 2x6V batteries in series. Jayco trailer works on 120v, but not off the batteries. They are new batteries fully charged. Checked the fuses & breaker. I am getting 12V from the trailer when connected to 120V. And I see 12V from the batteries w/o 120V.

    • Randy Godwin profile imageAUTHOR

      Randy Godwin 

      4 weeks ago from Southern Georgia

      Michelle, can you give me a bit more info on the problem?

      Randy

    • profile image

      Michele 

      4 weeks ago

      I have a 92 Doge Ram by winnabago. My electrical system does not work. ? I want to turn it into a tiny home. No one can figure out what's up? Any suggestions on what to do? Gratitude my friend.

    • Randy Godwin profile imageAUTHOR

      Randy Godwin 

      5 weeks ago from Southern Georgia

      Jeff, look into the 110 volt power panel to determine what color wires are connected to the two grounds in the box if you have a 30 amp hookup.

      Randy

    • profile image

      Jeff 

      5 weeks ago

      2004 dutchmen 5th wheel trailer plug was ripped off. Whats the easiest way to identify the wires? The ones coming from the trailer arent the same color as to what goes to the 7 way plug.

    • Randy Godwin profile imageAUTHOR

      Randy Godwin 

      6 weeks ago from Southern Georgia

      Christina, check the wiring connections in the access panel near the slide-out.

      Randy

    • profile image

      Christina 

      6 weeks ago

      I have a 2006 explorer frontier, one side of the slide out is not working when trying to move it back in. It went out fine but will not come back in now.

    • Randy Godwin profile imageAUTHOR

      Randy Godwin 

      8 weeks ago from Southern Georgia

      Zachary, check the power in the 110 volt power panel in the camper. It's not uncommon for the main breaker, or one of the others, to go bad. Running on a small extension cord is never a good idea even though the voltage you may be using is minor.

      Randy

    • profile image

      Zachary 

      8 weeks ago

      I have a 1985 wilderness by fleetwood, plugged into house with a extenion cord to connect house power to the cord from the outside of the camper. I only run a eletric fan that consumes up to 120 volts. Sunday night the whole camper lost power in ever outlet. I flipped all the breakers inside the house thinking maybe that was it, that did not work, checked the extenion cord that I used from the house and that was providing power. I am not sure what to try next.

    • Randy Godwin profile imageAUTHOR

      Randy Godwin 

      8 weeks ago from Southern Georgia

      Jack, this sounds like a bad ground in one of the fixtures which affects the others in the circuit. Check the connections of the lights and make sure they're properly grounded. Good luck!

      Randy

    • profile image

      jack meyer 

      8 weeks ago

      i have a 2005 jayco jayflight.the two rear ceiling lights by the back bunks and one wall light near the kitchen table dont work.everything else is fine.i checked the fuses of course.any hints how to fix this?

    • Randy Godwin profile imageAUTHOR

      Randy Godwin 

      8 weeks ago from Southern Georgia

      Arron, did you change the GFIC outlet?

      Randy

    • profile image

      arron million 

      8 weeks ago

      i have a three outlet in my travel trailer that are not working n I checked the ground fault outlet replaced one breaker and nothing charged

    • Randy Godwin profile imageAUTHOR

      Randy Godwin 

      8 weeks ago from Southern Georgia

      Mike, is there a separate thermostat for the furnace? If so, there should be a fuse or breaker in the 12 volt power panel which controls the furnace thermostat.

      Randy

    • profile image

      Mike 

      8 weeks ago

      I am hooking up my furnace in my 1982 citation camper but dont have no power from converter to furnace wiring

    • Randy Godwin profile imageAUTHOR

      Randy Godwin 

      2 months ago from Southern Georgia

      Madbull, if everything works with the battery charger connected, then yes, a new converter may be in your future. Thanks for reporting back in with your solutions for the breaker problems.

      Randy

    • profile image

      Madbull 

      2 months ago

      Follow up to 2004 Dutchmen Aero.

      Took you advice to check ground....it seemed to be ok. (Is there a way to post pics...to be sure I'm checking proper wire). I did remove and clean.

      After doing this, I checked the black wire leaving the battery. It was connected to two breakers before going to electrical box under trailer. The breakers were quite rusty and multimeter showed one didnt have power. So replaced with new breaker and the12 volt lights worked.

      At this time the battery had a charge.

      Was going to replace second breaker even though it seemed to be working, but was having trouble due to rust. A guy said since Im not planning on towing the trailer, to alter a black wire on breaker. Which I did and system seemed to be fine.

      A week or so later the 12 volts were dimmed, then day later 12 volt not working. Checked the battery and no charge. Charged battery overnight and everything works.

      Seems when plugged into power the battery is not being charged. Would this be the converter or could it be the altering of black wire between breakers?

      Thanks again.

    • Randy Godwin profile imageAUTHOR

      Randy Godwin 

      2 months ago from Southern Georgia

      Louise, which fan are you referring to? Is it an overhead vent fan?

      Randy

    • profile image

      Louise 

      2 months ago

      The Kodiak trailer is a 2011. I unhooked batteries but the fan does shut down.

    • profile image

      Louise 

      2 months ago

      Kodiak 20 ft. by Dutchman. Is there a battery disconnect swith? & why wont the fan shut off?

    • Randy Godwin profile imageAUTHOR

      Randy Godwin 

      2 months ago from Southern Georgia

      David, it should be near the pigtail end of the electrical connection. You should have an access panel somewhere near here.

      Randy

    • profile image

      David Brewbaker 

      2 months ago

      Where would i find the breaker fuse panel for a 1996 nash 28 ft

    • Randy Godwin profile imageAUTHOR

      Randy Godwin 

      2 months ago from Southern Georgia

      Vicki, check the voltage in the 110 volt power panel to see if there's a bad breaker or short in one of the breakers.

      Randy

    • profile image

      Vicki 

      2 months ago

      I have 5 outlets not working in my camper (2 in bedroom, 2 where the Tv and radio plug in and the one the fridge is plugged into. Everything was working fine when I had it hooked up to the generator and was outside cleaning it up. I had the fan going and the radio going and everything was just fine. Then the very next day we hooked it up to the house power and all these Outlets are not working we have reset the GFIC and those plugs are working but the other ones like I said before are just not working. The fan will run but when you put a light in it the light blows right away...... Any help would be great TIA

    • Randy Godwin profile imageAUTHOR

      Randy Godwin 

      2 months ago from Southern Georgia

      Patrick, I'm planning an article just for that in the near future.

      Randy

    • profile image

      Patrick Ryskey 

      2 months ago

      Hello Randy could you post a to do list to store a camper for the winter season, i know rv antifreeze but how much and what other helpful hints do you have, thx Pat

    • Randy Godwin profile imageAUTHOR

      Randy Godwin 

      2 months ago from Southern Georgia

      Madbull, this sounds like a bad ground. Check and clean the negative battery cable where it attaches to the steel frame of the camper. This is the main ground for the 12 volt system. Let me know if this doesn't fix the issue.

      Randy

    • profile image

      Madbull 

      2 months ago

      Have a 2004 Dutchmen Aero Star. Plugged into 30 amp service. Have to be careful what electronics are in use.

      Every now and then the overhead 12 volt lights flicker/dim and at times go out. Outlets still work.

      Times when the lights go out, they come back on by themselves after a few minutes or couple of hours. This past weekend,when they went out, they did not come back on. Fridge was also affected and had to be switched to propane.

      Converter fan is always running and has green light on.

      We are new to owninng a travel trailer and would very much appreciate some guidance as to how to go about fixing.

      Thanks so much!

    • Randy Godwin profile imageAUTHOR

      Randy Godwin 

      2 months ago from Southern Georgia

      Brickz, there should be no problem with running only one wire if the LEDs are grounded to the metal part of the camper.

      Randy

    • profile image

      Brickz 

      2 months ago

      Restoring a vintage camper and adding 12 volt wiring for interior LED lights. can I use chassis for ground and run only a single wire with +12 V to fixtures or should I run second ground wire to all fixtures. Trailer lights are all grounded to chassis. Any issue with doing same for separate 12V system?

    • Randy Godwin profile imageAUTHOR

      Randy Godwin 

      2 months ago from Southern Georgia

      Mary, you don't need a battery for your receptacles to work. Unless you have at least a 30 amp breaker you cannot run everything and the AC at the same time. Your lights and recepts should work on a 15 or 20 amp breaker though.

      Randy

    • profile image

      Mary Stokes 

      2 months ago

      Hi Randy dose a frontier explorer 2007 camper trailer carry a back up battery if so where would I find it I had my electricity hooked up to live their but no receptacles work flip breaker on at box everything has juice to it but will not work is it a possibility that I need to run off two breaker's instead of everything on one breaker thank you

    • Randy Godwin profile imageAUTHOR

      Randy Godwin 

      2 months ago from Southern Georgia

      Mary, you need to get the man back who did the wiring. I can't tell you without looking at the wiring what is wrong.

      Randy

    • profile image

      Mary Stokes 

      2 months ago

      I just bought a 2007 frontier TV camper trailer it was connected up the man from a heating and air company put in my new wiring but he disconnected the electric stove wires and made it my main breaker the wires he left unhooked still have juice running too them but all of the receptacles have juice going to them but none of my lights will come on or plug ins will work the top air came on yesterday but when turn off then hotwater heater came on very frustrated

    • profile image

      Sandy Pilgram 

      2 months ago

      Hoping to find electrical diagram for a Fleetwood wildnerness park model 2001 39 foot. so we can run a new line to the New outlets that are not working,No power in the line now after replacing the breakers and gfi,in the bathroom. We also have 12.2 wiring, so the RB outlets do not work as they are made for 14.2 wire So replaced them with real outlets.Ty for any info

    • profile image

      Sandy Pilgram 

      2 months ago

      Yep we did that, already, Got most of our lights and plugins Back, but still have two in the kitchen not working and outside, plug ins, got everything else back but those 3 plug ins,

    • Randy Godwin profile imageAUTHOR

      Randy Godwin 

      2 months ago from Southern Georgia

      Sandy, if you have any GFI outlets with a reset button them, try changing them out as they are notorious for going bad after a few years.

      Randy

    • profile image

      Sandy Pilgram 

      2 months ago

      Hi Randy, I am trying to find the wiring Diagram for a Fleetwood wildnerness park model 2001 39 foot.

      We are having a electrical issue on a few outlets, in the Kitchen area, we have no power coming to them, we replaced the breakers, and the outlets to reg outlets, Ty for any help.

    • Randy Godwin profile imageAUTHOR

      Randy Godwin 

      2 months ago from Southern Georgia

      Ethan, check the negative battery cable ground where it attaches to the steel frame of the camper. It may be loose or corroded even though it doesn't appear to be.

      Randy

    • profile image

      ethan 

      2 months ago

      I have a 2003 rockwood and when we hooked it up to the 110 plug the lights flash inside and something beeps but will still pull the slid in what could this be?

    • Randy Godwin profile imageAUTHOR

      Randy Godwin 

      3 months ago from Southern Georgia

      Glad you found the problem, Daniel!

      Randy

    • profile image

      Daniel Grimm 

      3 months ago

      Update: I think the ground was the problem. I re wrapped the wire nut in the junction box and now have power. It must have disconnected during previous trouble shooting a couple days ago.

    • profile image

      Daniel Grimm 

      3 months ago

      Hi Randy,

      I have power to everything when plugged in. However, unplugged, there is no power. I put a new battery in...no power. I changed the in-line fuses (from battery to camper)…. no power. I re-ground the battery to camper frame...no power. I plugged the camper in and disconnected the battery....Power to everything. Every time I turned another light on, I could hear the cooling fan turn faster. All fuses and 120v breakers are normal and all wires seem fine. What can be the problem? Thanks in advance!

    • Randy Godwin profile imageAUTHOR

      Randy Godwin 

      3 months ago from Southern Georgia

      Enos, this is beyond my knowledge. Sorry!

      Randy

    • profile image

      Enos johnson 

      3 months ago

      Bought a 2011 forest ri er toy hauler the fuel station pump comes on but does not pump gas checked impeller and rotation all seem to work right tank is plum full any suggestions

    • profile image

      nevadacarbide 

      3 months ago

      we have found the prob.the plug harness was some how smashed?the damndess thing.thank god it did not short the power supply out!thank you for your input.nev

    • Randy Godwin profile imageAUTHOR

      Randy Godwin 

      3 months ago from Southern Georgia

      Nevada, it's possible but unlikely.

      Randy

    • profile image

      nevadacarbide 

      3 months ago

      if the ac power supply has a bad ground would that trigger the running lights when plugged in?

    • Randy Godwin profile imageAUTHOR

      Randy Godwin 

      3 months ago from Southern Georgia

      Nev, check the battery ground for corrosion or being loose.

      Randy

    • profile image

      nevadacarbide 

      3 months ago

      we have a 2007 nomad lite ,we plugged it in to the house on a cord and adapter and now the running lights are on?

    • Randy Godwin profile imageAUTHOR

      Randy Godwin 

      3 months ago from Southern Georgia

      Tom. apparently you have a short somewhere in the 110 volt system. Check the main ground in the power panel to be sure it hasn't vibrated loose during transit. You might also turn the breakers off one at a time to see if one of the other circuits is causing the problem.

      Randy

    • profile image

      TOM 

      3 months ago

      2005 palimino rv 5th wheel....lights lightly flicker on 110 volts, has also trippedthe breaker, mostly on supplied camp power box....lights running steady off the battery which shows 11.67 volts...pulled all camper breakers and checked all connections for tightness...any suggestions?

    • Randy Godwin profile imageAUTHOR

      Randy Godwin 

      3 months ago from Southern Georgia

      John, have you checked the main battery ground cable yet? This cable connects to the steel frame of the camper and is often the culprit in the 12 volt DC system. This connection should be cleaned often even if it doesn't appear to be loose or corroded.

      If this doesn't solve the problem,then connect a good battery charger up and if everything works as it normally does, then yes, your coverter may need replacing.

      Randy

    • profile image

      JaCR 

      3 months ago

      Randy:

      I have a Parallax 7155 55 amp Power Converter in my 2011 travel trailer that is giving me the following results:

      With 120 ac hooked up and main breaker ON I get 5.51v DC at the output blue & white wires, & about 7v DC at the 30 amp fuse slots.

      Turn the breaker off, removing AC power, and the DC voltage at the 30 amp fuse goes to battery voltage (12.7).

      Battery is not being charged and when Battery is disconnected with AC hooked up, none of the DC powered equipment (lights, pump, slide, etc) will work.

      Would just like to confirm that the Converter is in fact bad before shelling out $170.

      Thx, John

    • Randy Godwin profile imageAUTHOR

      Randy Godwin 

      3 months ago from Southern Georgia

      Martin, have you burned out your converter?

      Randy

    • profile image

      martin 

      3 months ago

      hello i have a 1980 vanguard slide in camper i pluded in 120 cord to my 12 volt blug by mistake ploed my 12 volt power

    • Randy Godwin profile imageAUTHOR

      Randy Godwin 

      3 months ago from Southern Georgia

      Joe, start by checking the 110 volt power panel for breakers possibly ruined by the mistake. When you get power to the main you can check the other breakers and appliances for damage. If you need more help please ask.

      Randy

    • profile image

      joe van reeth 

      3 months ago

      Randy,

      Our new (to us, 2003) trailer 30 amp, had 220 hooked to it by mistake. What is the best plan to check and correct this?

      Did see this question asked, but do not know how to see your response.

      Joe

    • Randy Godwin profile imageAUTHOR

      Randy Godwin 

      3 months ago from Southern Georgia

      Denver, believe it or not I get this problem often. You'll need to start at the power panel and check all the breakers, especially the main. You may get lucky and not have to replace the control boards on the AC and H/W heater. The converter may be okay, but you can tell when you get power to the 110 volt panel again. Let me know if you need more info.

      Randy

    • Randy Godwin profile imageAUTHOR

      Randy Godwin 

      3 months ago from Southern Georgia

      Corey, I have no info for the wiring diagram, but you should be able to find it online. As far as the fridge is concerned, check the exhaust vent as any wasp nest or blockage will prevent the fridge from working. Also, the fridge won't work if the camper isn't level. You can also check the electric element on the fridge to see if power is getting to it or if it's bad. Good luck!

      Randy

    • profile image

      Denver webb 

      3 months ago

      I just bought a 2001 sandpiper 5th wheel trailer. The guy I bought it from told me to use 220 volt even tho the trailer says 110. I used 220 and have fried the wiring and now nothing works. How do I go about fixing this? I assume i need to replace the converter?

    • profile image

      Corey Clausen 

      3 months ago

      Hi Randy,

      I have a couple questions. I have a 1991 starcraft starburst popup that im trying to find a wiring diagram for. A racoon ripped out the gas and the wiring the battery on the tongue. Any ideas would be great. Im fixing that to sell because i bought a 2008 Trail-Lite. It has a Norcold refridgerator in it that does not work. It is Model # N512. The previous owners never used it. Power comes on to the panel. You can switch it back and forth to gas or electric. I just don't know where to start...

    • Randy Godwin profile imageAUTHOR

      Randy Godwin 

      4 months ago from Southern Georgia

      Jerri, more info please.

      Randy

    • profile image

      Jerri Smith 

      4 months ago

      Continous chirping sound

    • Randy Godwin profile imageAUTHOR

      Randy Godwin 

      4 months ago from Southern Georgia

      David, this sounds like a power converter problem or a battery issue. Check the negative battery ground where it attaches to the steel frame of the camper. This connection often is the problem. If this doesn't help then the converter may be the problem.

      Randy

    • profile image

      david freeman 

      4 months ago

      we have a mallard bumper camper. it has a 110/12 volt system last night in a rain storm the lights went dim and then came back on bright like they should. now in the power box you can hear a click in it the lights will dim and the t.v. will dim then you can hear another click and every thing will go back normal. it keeps repeating this. what could be wrong with this. please advise. thanks.

    • Randy Godwin profile imageAUTHOR

      Randy Godwin 

      4 months ago from Southern Georgia

      Josh, do the GFIC's work properly?

      Randy

    • profile image

      Josh Landacre 

      4 months ago

      Recently I hooked up my 2017 Wildwood Xlite travel trailer and I noticed a weird smell from the breaker box. The Power Center box was warm to the touch. The 30/20 breaker on my Power Center were tripped. I flipped it back to on and there was a surge and sparked a small electric fire frying all the wires inside the Power Center and melted the plastic around the Power Center edges. Power to the whole unit went out including the GFI's. Battery power operated the lights, slideout, and thermostat. I purchased a new WFCO 8955 series Power Center, 30 Amp shore power cord, and three knew Murray breakers 30/20, 15/15, and a 15/15. After installing everything to the tee, I've got 120 Volt power coming in on the 30/20 breaker as this is confirmed using a test light and the AC Unit turning on....However, the two 15/15 breakers do not turn on the appliances or other power the slide outs and GFI's. We can't seem to understand why the 15/15 breakers are not working like the 30/20... Possible I need to run a continuity test to make sure the surge didn't burn up the wiring somewhere else?

    • Randy Godwin profile imageAUTHOR

      Randy Godwin 

      4 months ago from Southern Georgia

      Dale, the main ground is where the negative battery cable connects to the steel frame of the camper. This connection needs to be cleaned often both the cable end and the frame. This is a common problem.

      Randy

    • Randy Godwin profile imageAUTHOR

      Randy Godwin 

      4 months ago from Southern Georgia

      Bob, if you have a wall mount thermostat, then yes, you need the 12 volt system to also power the lights and the H/W heater thermostat. You may get by without a battery if the converter powers these items okay by itself.

      Randy

    • profile image

      Dale Adams 

      4 months ago

      I have suddenly lost my 112 volt system! It was working fine two weeks ago. The inline fuse from the battery is not burn. Hooking up to the generator, everything works, so i am thinking it is not the converter. Hooking up to the truck, nothing works again. I did notice a very faint glow from the pump switch on the monitor late at night when there was no lights on. So, would i be correct in thinking it is a grounding issue and the next question is where would they ground the 12v system? I replaced the ground connection from the converter already.

    • profile image

      Bob Holman 

      4 months ago

      Hi Randy

      My father and I have a travel trailer at a hunting camp and we have utility power available and we will never need to move it again! Do we have to have the converter for the DC lights and AC or can we just use the AC from utility

    • Randy Godwin profile imageAUTHOR

      Randy Godwin 

      4 months ago from Southern Georgia

      Michael, unless you have a wiring diagram you're simply guessing at what the box is for. I'd work around it.

      Randy

    • profile image

      Michael 

      4 months ago

      I bought a older coachman cub cadet camper

      Someone butchard the wiring system, i have started the repair process but it seems i have a box , but a missing piece. Poss abreaker or 2 brkrs. The box is wider than a common receptacle wall mt box.

    • Randy Godwin profile imageAUTHOR

      Randy Godwin 

      4 months ago from Southern Georgia

      Cathy, check the negative battery cable where it attaches to the steel frame of the camper. Make sure the connection is clean. You may also connect a good battery charger to see if everything works normally. If so, the converter may be at fault.

      Randy

    • Randy Godwin profile imageAUTHOR

      Randy Godwin 

      4 months ago from Southern Georgia

      Melissa, check the battery ground cable where it attaches to the steel frame of the camper. This connection needs to be very clean in order for the 12 volt system to work properly.

      Also, you may have a breaker or fuse inline on the positive battery cable leading back to the 12 volt converter or 12 volt power panel. Not all campers have this, but you can check for sure.

      Randy

    • profile image

      Melissa 

      4 months ago

      I have a 2015 classic c sportsmen by KZ travel trailer that has no power coming from the battery and we just bought a new battery today for it what could it be

    • profile image

      Cathy 

      4 months ago

      I have a 99 Dutchman Sportsman model 2704, I have problems with the 12V lights in the living area, and no water. A woman NEEDS water. Can you help me?

    • Randy Godwin profile imageAUTHOR

      Randy Godwin 

      5 months ago from Southern Georgia

      Michael, when connected to shore power the converter is producing a 12 volt DC charge to the battery which power the running lights and tail lights.

      There's probably a bad ground somewhere, and more than likely, it's the battery ground cable where it attaches to the steel frame of the camper. This is the main ground for the 12 volt system and all sorts of weird stuff happens on the 12 volt system when this ground is corroded or loose.

      Try cleaning this connection well and see if this fixes the problem. Good luck!

      Randy

    • Randy Godwin profile imageAUTHOR

      Randy Godwin 

      5 months ago from Southern Georgia

      Chad, I don't now the layout of your 12 volt system, but you should have power coming from the battery on a red cable or wire. Apparently, yours has a break or short somewhere. Or there's a fuse/breaker you cannot find, Sorry I cannot be of further help on this problem.

      Randy

    • profile image

      Michael Gully 

      5 months ago

      I have a 1989 Scamp. The battery seemed to be getting weak, so I bought a new one. When I hooked it up, the tail lights and running lights came on. I unhooked the battery and plugged in with 30 amp, and the tail lights came on again. Now whenever the battery is connected or the trailer is plugged in to electricity, the tail lights and running lights are on. How can 120 volts power the tail lights? Thanks!

    • profile image

      Chad 

      5 months ago

      I have checked the ground with a multimeter and is good. I tried to find an inline fuse but the pos cable goes into the floor and im not sure where it leads to. I have an converter with a red cable that does not have power when hooked up to only batteries and also have a red cable going back to fuse panel. Which one is from batteries and where are some likely spots for them to hide the inline fuse? Thank you for your help.

    • Randy Godwin profile imageAUTHOR

      Randy Godwin 

      5 months ago from Southern Georgia

      Chad, there are two things you need to check first. There is a negative battery cable connected to the steel frame of the camper. Make sure the connection is clean on both the cable end and were it contacts the frame.

      Look for a fuse/breaker inline on the positive battery cable leading back to the converter or power panel. You may have tripped the breaker/fuse. Hope this helps!

      Randy

    • profile image

      Chad 

      5 months ago

      I have a 1996 Nash 20n. Accidently hooked up batteries in series instead of parallel and now I am not getting any power from batteries which are still good. Checked all fuses I can access/find and nothing seems to be at fault. Everything works fine when plugged into 110. What are your thoughts.

    • Randy Godwin profile imageAUTHOR

      Randy Godwin 

      5 months ago from Southern Georgia

      Megan, if you have any GFIC outlets, check them to see if they will reset or if they have power going to them. These outlets, usually in the bath and kitchen area, will go bad and cause the other regular outlets on the same circuit not to work either.

      Let me know if this doesn't work and we'll go from there.

      Randy

    • profile image

      Megan Buchanan 

      5 months ago

      Hey, Randy me and my husband were camping last week and the camper would not switch over from the battery to electric. We called camping world and they told us we need to buy a new converter so we bought that and put it on and it fixed it but the bedroom outlets do not work and our refrigerator will not switch over from propane to electric and we have no idea what to do we have checked the breaker and the outlet for it and they are fine. We have a 2017 27 foot mallard and are 20 days over the warranty. Its a 30 amp camper or atleast thats what we have used the last year and never had any problems. Any advice or suggestions would be greatly appreciated thank you in advance!!

    • profile image

      Fred A Morse 

      5 months ago

      Thank you Randy have a great day.

    • Randy Godwin profile imageAUTHOR

      Randy Godwin 

      5 months ago from Southern Georgia

      Fred, changing the converter is not a difficult job which you should be able to handle.

      Randy

    • profile image

      Fred A Morse 

      5 months ago

      So if the converter is bad it can cause multiple problems?I have had a small cheap charger on it but it don’t keep things going for long.Is the converter something I could possibly change myself.Thanks for your help.

    • Randy Godwin profile imageAUTHOR

      Randy Godwin 

      5 months ago from Southern Georgia

      Fred, try connecting a good battery charger and if everything works normally, then yes, the converter is at fault.

      Randy

    • profile image

      Fred A Morse 

      5 months ago

      2006 nomad camper. The 12v lights stay dim an the battery won't stay charged. The water will only stay hot for a couple seconds. Do the lights always run on 12v even f you you plugged in to 110? There is only one light in the camper that will work with 110. Could it possibly be a converter problem? We are hooked to 30 amp power. Thank you for any help.

    • Randy Godwin profile imageAUTHOR

      Randy Godwin 

      5 months ago from Southern Georgia

      Everette, there may be a plug which has come loose when the slide-out was activated either n or out. There's usually an access panel where you can see the wiring connections located near on in the slide-out.

      Randy

    • profile image

      Everette Branch 

      5 months ago

      Have a 2015 Sunset Trailer 32BH Camper and the slide out in dinning area of camper, the lights will not work and receptacles are dead also. They were working and just stopped, all fuses and breakers check good, any ideas on what or where to check

    • Randy Godwin profile imageAUTHOR

      Randy Godwin 

      5 months ago from Southern Georgia

      Patrick, as long as they use a regular 110 volt outlet, any micro will work.

      Randy

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