HEAD LIGHT PROBLEM

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by BRS1955, Dec 3, 2019 at 5:31 AM.

  1. BRS1955

    BRS1955 Bobtail Member

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    Nov 16, 2016
    Kentucky
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    right head light on 2007 379 pete goes off sometimes and is at the point where it is off more then it is on. I am thinking maybe a ground problem. does anyone know where it would be grounded. 3 prong connection.
     
  2. FreightyAK

    FreightyAK Bobtail Member

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    20
    Aug 7, 2018
    AK
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    Check the wires from the harness plug foward to the light. Also check the wires that cross over from the driverside. Its common to find a bad wire there.
     
  3. RocketScott

    RocketScott Light Load Member

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    82
    Apr 10, 2013
    Tacoma, WA
    0
    Check by the hinges too. The wires can get pinched there

    I believe the headlights ground all the way back inside the cab. If you have a multi tester you can check voltage and ground on the harness behind the bumper and at the firewall
     
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