Converting an Old Whelen PCDS-9 Edge 9000 Lightbar Into a PCCS

Updated on August 10, 2017
jasonponic profile image

Recently married on Sept. 8, 2017, Jason Ponic works in the exciting world of Hollywood film and television by day and writes by night.

The Whelen® Edge 9000 series.

It's been one of the most popular lightbars of all time. The Whelen® Edge was launched in the early 1990s as one of the first non-rotator lightbars available to law enforcement. Using patented state-of-the-art strobe technology, these lightbars offered a lower profile, greater customization, and more durable solid state construction than Federal Signal® or Code 3® rotator bars. As the popularity of the Edge grew, so did the number of variations offered by Whelen. Some configurations became industry specific. The Whelen Edge Towmaster, for example, was an Edge 9M bundle kit specifically offered to tow trucks. As the years progressed, the circuit technology also improved with some of the first "smart" computerized lightbars entering the market. Enter the Whelen Edge 9000 PCDS-9.

Their first smart lightbar, the PCDS-9, (Power Center Diagnostics System) used serial communication between the control and the light bar to send flash pattern or steady burn codes. This lightbar had the revolutionary ability to tell if a lightbulb or fuse was burnt out and would send the error code to the control box in the form of a flashing light. The serial communication also eliminated thick and bulky power/control cords to the lightbar making installation and maintenance easier. In their place was a simple power cable and a thin serial communication cable.

What made the PCDS-9 revolutionary also gave it a short service life. The control boxes were flash programmed into memory by Whelen for just one specific lightbar configuration. Where is the PCCS used direct wire connections that could easily be reconfigured by the user if lightbars and control boxes were swapped. The PCDS memory could only be reprogrammed by Whelen. If you were trying to plug in an Edge with a Traffic Advisor to a control box that was not programmed to support a Traffic Advisor, the resulting error codes would not allow the bar to function properly. As a result, unless you were lucky to purchase a PCDS-9 with its original control box, the likely of finding a comparable box where slim. When Whelen finally stopped supporting the PCDS, the ability to have them reprogram control boxes ended. At that point, control boxes were all but worthless and the PCDS system lightbars were simply parted out.

Is Conversion Possible?

So say you are in the same predicament I found myself in where you have a PCDS-9 bar you want to resurrect but have no compatible control box. What do you do? Simple. Convert it into a PCCS-9 system!

Since Edge 9M bulbs or housings themselves haven't changed over the decades, they are completely interchangeable regardless of the circuit boards or control box. If you have a lightbar where all bulbs still work, its easy to replace the circuit boards with no soldering or rebuilding of any wiring harnesses.

The PCCS-9N control box uses multiple control cables to send commands to the lightbar. The PCDS-9 uses only one cable.
The PCCS-9N control box uses multiple control cables to send commands to the lightbar. The PCDS-9 uses only one cable.

What do you need to convert?

The PCDS-9 Lightbar I intended to convert came out of Bernalillo County Sheriff's Office. It is a four corner strobe Edge with four halogen front flashers, two doubled as takedowns. The rear edge contained an eight halogen lamp traffic advisor. These were used for ten years in tandem with Federal Signal Vista lightbars before being replaced with Code 3 LEDx lightbars.

The parts in this PCDS-9 system that needed to be replaced:

  • Serial Communication/Driver Board
  • Serial Diagnostic Sensor Board
  • Serial Traffic Advisor Control Board
  • Serial Communications Cable
  • Serial Wiring Harness.

These were the parts needed to as conversion parts.

  • 94 Series Matrix Board
  • Halogen Flasher Board
  • Internal TA cable harness and External TACTRL 1 TA Control Head x 1
  • PCCS Control Multi-Cable x 1
  • Strobe Wire Harness x 2

These were the parts that could be carried over between the two systems.

  • Power Cable x 1
  • Takedown wire harness x 2
  • Alley light wire harness x 2
  • Strobe Power Supply x 1

Stripped out Edge lightbar.
Stripped out Edge lightbar.

Installation

After removing all the PCDS-9 boards and wires, you're effectively left with an empty frame. Even the carry over parts should be removed to make it easier for installation. You will find everything is plug and play with each cable and socket. The strobe system uses an entirely different socket than the halogens so there is no risk of cross plugging.

The 94 matrix board, while shorter, mounts in the same position as the original serial receiver board. You will notice two positive and two negative prongs, a set for the strobes and a set for the halogen. Plugging the original power cable into one of these sets and running cross wires to the second set will omit the need for a second power cable.

The halogen flasher board mounts where the serial traffic advisor board was. Documentation for wiring can be found here. The inputs plug into the fused slots on the matrix board.

The Traffic Advisor is independently driven. The wire harness is a simple eight slot chain wire that connects directly to the external control head. All eight lamps are control and powered by this harness and does not rely on the main matrix board at all. The traffic advisor can fire even when the main board is unpowered.

The 94 matrix board installed.
The 94 matrix board installed.

Testing

You should never power your lightbar in a disassembled state. During installation, you should always use a meter to determine what ports and prongs are which. Accidentally grounding the wrong wire can fry the matrix board permanently. Whelen has nearly all the literature you need available online here.

Completed Conversation

Comments

    0 of 8192 characters used
    Post Comment

    No comments yet.

    working

    This website uses cookies

    As a user in the EEA, your approval is needed on a few things. To provide a better website experience, axleaddict.com uses cookies (and other similar technologies) and may collect, process, and share personal data. Please choose which areas of our service you consent to our doing so.

    For more information on managing or withdrawing consents and how we handle data, visit our Privacy Policy at: https://axleaddict.com/privacy-policy#gdpr

    Show Details
    Necessary
    HubPages Device IDThis is used to identify particular browsers or devices when the access the service, and is used for security reasons.
    LoginThis is necessary to sign in to the HubPages Service.
    Google RecaptchaThis is used to prevent bots and spam. (Privacy Policy)
    AkismetThis is used to detect comment spam. (Privacy Policy)
    HubPages Google AnalyticsThis is used to provide data on traffic to our website, all personally identifyable data is anonymized. (Privacy Policy)
    HubPages Traffic PixelThis is used to collect data on traffic to articles and other pages on our site. Unless you are signed in to a HubPages account, all personally identifiable information is anonymized.
    Amazon Web ServicesThis is a cloud services platform that we used to host our service. (Privacy Policy)
    CloudflareThis is a cloud CDN service that we use to efficiently deliver files required for our service to operate such as javascript, cascading style sheets, images, and videos. (Privacy Policy)
    Google Hosted LibrariesJavascript software libraries such as jQuery are loaded at endpoints on the googleapis.com or gstatic.com domains, for performance and efficiency reasons. (Privacy Policy)
    Features
    Google Custom SearchThis is feature allows you to search the site. (Privacy Policy)
    Google MapsSome articles have Google Maps embedded in them. (Privacy Policy)
    Google ChartsThis is used to display charts and graphs on articles and the author center. (Privacy Policy)
    Google AdSense Host APIThis service allows you to sign up for or associate a Google AdSense account with HubPages, so that you can earn money from ads on your articles. No data is shared unless you engage with this feature. (Privacy Policy)
    Google YouTubeSome articles have YouTube videos embedded in them. (Privacy Policy)
    VimeoSome articles have Vimeo videos embedded in them. (Privacy Policy)
    PaypalThis is used for a registered author who enrolls in the HubPages Earnings program and requests to be paid via PayPal. No data is shared with Paypal unless you engage with this feature. (Privacy Policy)
    Facebook LoginYou can use this to streamline signing up for, or signing in to your Hubpages account. No data is shared with Facebook unless you engage with this feature. (Privacy Policy)
    MavenThis supports the Maven widget and search functionality. (Privacy Policy)
    Marketing
    Google AdSenseThis is an ad network. (Privacy Policy)
    Google DoubleClickGoogle provides ad serving technology and runs an ad network. (Privacy Policy)
    Index ExchangeThis is an ad network. (Privacy Policy)
    SovrnThis is an ad network. (Privacy Policy)
    Facebook AdsThis is an ad network. (Privacy Policy)
    Amazon Unified Ad MarketplaceThis is an ad network. (Privacy Policy)
    AppNexusThis is an ad network. (Privacy Policy)
    OpenxThis is an ad network. (Privacy Policy)
    Rubicon ProjectThis is an ad network. (Privacy Policy)
    TripleLiftThis is an ad network. (Privacy Policy)
    Say MediaWe partner with Say Media to deliver ad campaigns on our sites. (Privacy Policy)
    Remarketing PixelsWe may use remarketing pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to advertise the HubPages Service to people that have visited our sites.
    Conversion Tracking PixelsWe may use conversion tracking pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to identify when an advertisement has successfully resulted in the desired action, such as signing up for the HubPages Service or publishing an article on the HubPages Service.
    Statistics
    Author Google AnalyticsThis is used to provide traffic data and reports to the authors of articles on the HubPages Service. (Privacy Policy)
    ComscoreComScore is a media measurement and analytics company providing marketing data and analytics to enterprises, media and advertising agencies, and publishers. Non-consent will result in ComScore only processing obfuscated personal data. (Privacy Policy)
    Amazon Tracking PixelSome articles display amazon products as part of the Amazon Affiliate program, this pixel provides traffic statistics for those products (Privacy Policy)