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Turn signal problem

Discussion in 'Peterbilt Forum' started by Bobbyj, Apr 13, 2020.

  1. Apr 13, 2020 #1
    Bobbyj

    Bobbyj Bobtail Member

    2
    0
    Apr 13, 2020
    0
    I have a 2007 model 379 peterbilt and when I turn the right turn signal on the left one comes on in the rear in the right front one does not work turn the headlights on and I only have 3.3 volts going to the right low beam headlight left works fine headlight step on the brake and it cancels out the turn signal noise indicator If I unplug the front harness at the firewall everything works fine
     
    Bobbyj, Apr 13, 2020
    Bobbyj, Apr 13, 2020
    #1
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  3. Apr 14, 2020 #2
    RocketScott

    RocketScott Medium Load Member

    579
    948
    Apr 10, 2013
    Kentucky
    0
    Probably a bad ground somewhere. The current will look around for a path to take and cause things like the opposite turn signal to flash. Just had that issue with a trailer (well, the turn signal part, trailers don't have headlights)

    Look around the hood pivot, wires like to get pinched there
     
    RocketScott, Apr 14, 2020
    RocketScott, Apr 14, 2020
    #2
    062 Thanks this.
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