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Headlight Problem, Extreme V

Discussion in 'Fisher Engineering Discussion' started by kmwharley, Feb 16, 2008.

  1. kmwharley

    kmwharley Member
    Messages: 94

    Last night driving down the road my headlights started going on and off when they wanted to. Did not matter wether or not it was on high or low beam. Got out and checked the plugs but no corrosion. Cleaned out and re applied di electric grease but did not help. Basically the headlights would for no reason just switch to the truck lights, although the turn signal lights would stay working, and back to the plow again.......hope i can get it figured out today as I will more than likly need to go out tomorrow before any dealer open. Thanks
     
  2. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    What about the marker lights on the plow, did they go out as well when it switched back to the truck lights on it's own (markers, not turn signals)?
     
  3. kmwharley

    kmwharley Member
    Messages: 94

    The amber marker/turn signal lights always stayed on on the plow. Just the headlights are the problem.
     
  4. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    What kind of truck?
     
  5. kmwharley

    kmwharley Member
    Messages: 94

    00 GMC 1 ton
     
  6. Gicon

    Gicon Senior Member
    from MA
    Messages: 989

    are they the intensifires?
     
  7. kmwharley

    kmwharley Member
    Messages: 94

    yes they are. I believe that is all that comes on an extreme v
     
  8. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    Might want to check the configuration plug for loose terminals/corrosion.

    Double check the pins in the grill plugs. Even if you found no corrosion they may need spread a bit.
     
  9. kmwharley

    kmwharley Member
    Messages: 94

    Sorry for the ignorance but are the "configuration plug" the one on the isolation module? Also the grill plugs pins are solid....so how would i spread them. Thanks
     
  10. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    The config plug is located near the Iso mod. Should have three wires in it. Blue, DK Blue/Red and a DK Blue/White.

    Have seen a couple where the terminals lose contact...