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04 F550 plow lights won't light

Discussion in 'Blizzard Plows Discussion' started by cmpswim, Feb 5, 2015.

  1. cmpswim

    cmpswim Junior Member
    from 65270
    Messages: 7

    When I turn light switch on truck headlights don't turn off. Turn signals and marker lights work on plow side just no headlights. I have an 8611 plow what would you check first. Relays by headlights all check out good.

    Thanks for advice
  2. damian

    damian Senior Member
    Messages: 330

    check the 2 wire connector near where you plug your controller in. I think it is a green wire with yellow tracer and the other wire is black. unplug and bridge the connector with a wire and see if it works. this will bypass the light switch on the controller.the relays are powered by the parking light power and the switch on your controller grounds the relays. good luck