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Help with plow lights?

Discussion in 'Western Plows Discussion' started by RYDER, Nov 16, 2007.

  1. RYDER

    RYDER Senior Member
    Messages: 281

    I have a 89 Gmc C7000 dump with a 10' unimount heavy weight none of the plow lights worked so I put on new plow lights, new relays, repair harness truck side and plow side, head light switch, and dimmer switch and new bats. all the lights worked it sat about 1.5 weeks know the truck lights work fine if the plow is unpluged if the plow is plugged in just the ds running light and ts work for the plow lights. Where do I start know?
  2. Crash935

    Crash935 2000 Club Member
    Messages: 2,377

    Check to make sure that you have power coming in to the relays on the brown wire when the marker lights are on.