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Old school buyers controller

Discussion in 'Truck & Equipment Repair' started by Sticks, Dec 14, 2009.

  1. Sticks

    Sticks Senior Member
    from Ontario
    Messages: 159

    i dont know what the blue wire is for?

    the back of the buyers controller has two reds ( battery in and power out )
    a ground

    and a pesky blue wire..... any ideas?