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HT headlight problem

Discussion in 'Fisher Engineering Discussion' started by Glenn81, Feb 8, 2013.

  1. Glenn81

    Glenn81 Junior Member
    Messages: 13

    Hi all I'm trying to help a friend out. He installed a new HT plow on his 04 Silverado. Everything works fine except for the low beam headlights, they both work but are on very dim. I tried to help him out, fuses are good and everything is good on the truck itself. We checked coming from the truck on the low beam harness there is good power and ground. The B side of the fisher connector is on the same side as the lock tab. If we unplug one side the right plow light goes out but the left one does get bright, also if we put a ground in the center pin of the plow light when it's on low beam both lights will get bright. Hope someone can give us a place to go next. Thanks in advance.
     
  2. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,971

    Ck the a and b on the headlight plugs. Sounds like you have them reversed. Also ck fishers website for any wiring info
     
  3. Glenn81

    Glenn81 Junior Member
    Messages: 13

    I've tried switching the plug in to the opposite side which has the A showing. When I do this though the low beam lights on the plow don't work at all.

    I've looked on Fishers site but haven't noticed anything wrong.
     
  4. chevyzrule810

    chevyzrule810 PlowSite.com Addict
    Messages: 1,238

    Are the contacts clean? Is this brand new wiring or used?
     
  5. Glenn81

    Glenn81 Junior Member
    Messages: 13

    Yes the contacts are clean and the plow was new October 2012. Could it be the 3 port module?
     
  6. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,971

    Still under warranty? Take it back ams let the dealer fiddle with it
     
  7. Glenn81

    Glenn81 Junior Member
    Messages: 13

    He installed the plow himself