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Western Snow Plow Electrical Problem

Discussion in 'Western Plows Discussion' started by daautosales, Jan 4, 2014.

  1. daautosales

    daautosales Junior Member
    Messages: 1

    I have a Western Unimount plow on a Chevy pickup. When I shut the truck off and the power to the plow off, the plow motor keeps on running and makes a whining noise until I unplug it from the black plug. When I plug it back in the motor comes back on. Last year I had problems with my truck battery draining when not in use now I'm wondering if this was related to that. Any suggestions on what to look at? After it sets for a while it works fine until I shut it back down again.
  2. dieselss

    dieselss PlowSite Fanatic
    Messages: 11,400

    Either the solenoid is bad, or your sending signal to the solenoid to stay running test light the 2 small wires. One should be gnd and the other should be nothing till.you press up left or right
  3. linckeil

    linckeil PlowSite.com Addict
    from CT
    Messages: 1,272

    does the plow motor run constantly only when the truck is off, or also while the truck is running? I'd be surprised if it's only when the truck is shut down. you'd surely notice it when the truck is shut down, but may not hear the plow motor running when the truck is running also. a constantly running plow motor will prematurely wear down a battery as the alternator on the truck would not be able to keep up charge the battery adequately.

    sounds like a bad solenoid to me.
  4. mishnick

    mishnick 2000 Club Member
    Messages: 2,353

    Just disconnect one of the small wires from the motor relay (solenoid). If the motor stops you have a wiring problem. If not change the relay.