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Boss plow light problems!

Discussion in 'Truck & Equipment Repair' started by BobTwardowski, Nov 19, 2012.

  1. BobTwardowski

    BobTwardowski Junior Member
    Messages: 7

    Just installed a used BOSS 8'6" super duty straigt blade on my '00 Chevy silverado 2500. All plow functions work fine as in up,down,left and right.The problem comes when I flip the switch from "TRUCK" to "PLOW" lights. The truck lights go off,parking lights stay ON on the truck but the plow lights do not come on. Also the high beam indicator on the dash will illuminate but wont flip to low beam.I do have left and right turn signal on plow and have determined headlamp bulbs plowside to be good.With the switch flipped to "TRUCK" all light functions work properly on the truck. I have verified good battery ground for the truckside harness and good power.I have also triple checked the headlight harness adapters for proper orientation which is "B" up.With the truck ignition on lights to the on position and switch flipped to "PLOW" lights I have battery voltage at plow light bulb plugs,both low and high beam plugs which I think is odd.I have hooked another truck to my plow and all lights worked fine so i have determined it to be truckside. I have a 4 relay harness and removed all relays and replaced them with known good ones and still no plow lights.Plowside 13 pin plug is new,ground at plow motor is shiny and corrosion free. I dont know where to take it from here please HELP!
     
    Last edited: Nov 19, 2012
  2. Spool it up

    Spool it up Senior Member
    Messages: 912

  3. basher

    basher PlowSite Fanatic
    from 19707
    Messages: 8,992

    you need to swap the commons. 00 are low side switched your plow must have come off a newer model truck, they changed to high side in 03. the instructions include the information on how to do this.
     
  4. BobTwardowski

    BobTwardowski Junior Member
    Messages: 7

    I have read through The BOSS installation manual and poured over the schematics, have not found the commons that need to be switched. Could you elaborate? Thanks for your help.
     
  5. basher

    basher PlowSite Fanatic
    from 19707
    Messages: 8,992

  6. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    Your headlight adapters are configured correctly if they're on the "B" side. But quadruple double check them again as that is the issue 99% of the time.


    Also check the vehicle option connector in the main harness to be sure it's in the standard orientation. Being a used setup the last vehicle it was on it may have been configured for reverse orientation which will create the issue you're having too.
     
  7. jasonv

    jasonv PlowSite.com Addict
    from kannada
    Messages: 1,114

    If you've got voltage at the plow lights, then sounds like missing ground.
     
  8. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    Afraid not. Not when there's B+ on both plugs simultaneously. That is a configuration issue. :waving:
     
  9. BobTwardowski

    BobTwardowski Junior Member
    Messages: 7

    Rechecked light adapter orientation, "B" faces locking clip on all plugs and gray is plugged to gray and black plugged to black. I also varified the vehicle option plug to be in standard configuration.
     
  10. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    For clarification, which body style is it? They came both ways in 2000.
     
  11. BobTwardowski

    BobTwardowski Junior Member
    Messages: 7

    Happy Thanksgiving, it's NEW body style.
     
  12. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    For some reason I keep getting the "server busy" spiel here today Bob so email me directly and we'll finish getting this taken care of.


    [​IMG]
     
  13. BobTwardowski

    BobTwardowski Junior Member
    Messages: 7

    I'm not finding your Email address on this mobile format. My Email is Smokin68Nova@aol.com. Thanks for your help.
     
  14. BobTwardowski

    BobTwardowski Junior Member
    Messages: 7

    B&B-

    Your Email to me came through but my replies to your yahoo account are being returned to me as " undeliverable". Oh the wonders of modern technology.
     
  15. BobTwardowski

    BobTwardowski Junior Member
    Messages: 7

    Problem solved, corroded wires just before bumper plug (Truckside) were to blame.
     
  16. Chuck Errett

    Chuck Errett Junior Member
    Messages: 2

    I have a 2002 2500hd with the same problem. I replaced the plug on the truck harness but did not notice any other issues with the wiring. Does anyone know which terminals should be "hot" when testing for power at the truck plug?