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Lights.... again

Discussion in 'Truck & Equipment Repair' started by MJay, Oct 30, 2009.

  1. MJay

    MJay Member
    Messages: 58

    Western 6'6. Had the plow 4 years, not used for a year. Lights on truck remain on, and plow lights look dim, signal lights don't work on plow either. Plow up/down - left/right no problem.
    Will be searching forums for similar problems, in ze meantime if anybody can point me in the right direction, much appreciated.

    Let it snow.
  2. LON

    LON Senior Member
    Messages: 749

    Sounds like a grounding issue. Is it a MM2?
  3. MJay

    MJay Member
    Messages: 58

    No idea what MM2 is.
    Harness type - B w/12 pin headlamp kit 2b/2d.
    Signals working on plow, schematic shows constant ground on headlight connector, however ground moves between two pins depending on low/high beams used.
    Something peculiar about 1992 Toyota electrics? Perhaps.

    Checked ground with circuit tester all looks well so far.
    Working my way through wiring and schematic.
    Any pointers helpful.
  4. WeDoSnowplowing

    WeDoSnowplowing Senior Member
    Messages: 160

    Grote Snowplow Lamps Model # 64261-4

    I been change my light very 3 years or sooner if the break. Grote Snowplow Lamps Model 64261 Color code is wire 1 White = Good Ground, wire 2 Blue = Turn lights, wire 3 Yellow = Park lights, wire 4 Green = Low Beam, wire 5 Red = High Beam. I added Lighted Plow guides = wire 6 Brown = parking lights. Have two 6-pole connectors NAPA # 755-1573 & HOPKINS # 47995 makes it easy for off season storage. Just unplug the connectors & take off.
    Test the wires on the truck end to see what color is what.
    Last edited: Nov 17, 2009
  5. MJay

    MJay Member
    Messages: 58

    Yep! Nail on the head OB1.
    I'm pretty hopeless when it comes to electronics, but by leaving the lights on and undoing every connector, cleaning, double checking schematic...., and then this one wire disappears into the wheel fender. Bad connection on the parking lights, a little wiggle and presto!
    Many thanks for all the info guys.
    Hope you have a grand season [make that a few grand].