579 LED Headlights

Discussion in 'Peterbilt Forum' started by PennAve, Mar 20, 2022.

  1. PennAve

    PennAve Bobtail Member

    4
    1
    Mar 18, 2022
    0
    Purchased and installed a set of United Pacific plug and play full led headlight assemblies for our 2013 579. Having an issue where when the parking brake is released and the DRL’s come on, they are back feeding through the clearance lights on the tractor and 1/2 of the trailer. We had a similar issue with led turn signal bulbs in the factory assemblies back feeding through the same clearance lights. With incandescent lights, everything works as they should. Has anyone ran into this issue?
     
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  3. FLHT

    FLHT Road Train Member

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    2,262
    Aug 2, 2014
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    Check the ground at the light...
     
  4. PennAve

    PennAve Bobtail Member

    4
    1
    Mar 18, 2022
    0
    Took the truck to peterbilt, there was a setting in the computer to recognize led lighting. Enabled that setting, at the same time disabled DRL. Problem solved
     
    Chuck579 Thanks this.
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