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Western Plow Wiring Problem

Discussion in 'Western Plows Discussion' started by sbrennan007, Nov 10, 2005.

  1. sbrennan007

    sbrennan007 Senior Member
    Messages: 350

    I have a 2005 Ford F250 with a Western Ultra Mount Poly Pro Plow. I noticed today that neither my parking lights nor turn signals work while the plow is connected to the truck.

    The headlights (both high and low beam) work fine on the plow, just no parking or turn signal lights.

    I have tested all wiring on the truck to ensure that the proper wires are connected to the correct truck wires (brown for parking lights) and light color turn signal wires on the truck side.

    All lights work on the truck as well when the plow is not connected. Also, the turn signals and parking lights work fine on the truck when the plow is connected.

    Any ideas? Thanks!
     
  2. Crash935

    Crash935 2000 Club Member
    Messages: 2,377

    I'm going to guess that your running the iso module being that its a 05?

    If you follow the harness from port 1 on the isolation module towards the front of the truck you will find 2 black fuse holders, the one with the 15 amp fuse is for park turn, check to see that the fuse isnt blown.
     
  3. sbrennan007

    sbrennan007 Senior Member
    Messages: 350

    Yes, it is the isolation module. I did check both of them actually and both are good...?

    I'm wondering if I could have a bad ground on the plow, but would the headlights still work?
     
  4. Crash935

    Crash935 2000 Club Member
    Messages: 2,377

    do you have power to the fuses?

    There is a red wire with a green strip and a ring terminal at the end that needs to go to a constant positive.
     
  5. sbrennan007

    sbrennan007 Senior Member
    Messages: 350

    Found the issue. It was the ground wire on the plow. It had been grounded to the plow frame and the the negative battery cable.

    Changed it and all is working good now.

    Thanks for the assistance.