t680 light trouble

Discussion in 'Trucks [ Eighteen Wheelers ]' started by chrispy, Feb 16, 2015.

  1. chrispy

    chrispy Bobtail Member

    Joined:
    Aug 26, 2011
    Messages:
    2
    Thanks Received:
    0
    Location:
    crspeck@gmail.com
    0
    2014 t680 my truck marker lights all won't come on they still flash with turn and hazard but otherwise stay dark meanwhile the clearance lights above the windshield all work.
    all the lights on a trailer work fine
    I'm either not finding the correct fuse or its something else.
    any tips?
     
  2. WitchingHour

    WitchingHour Road Train Member

    Joined:
    Apr 1, 2011
    Messages:
    3,424
    Thanks Received:
    2,144
    Location:
    Broomfield, CO
    0
    Sounds like you've got a likely wiring harness issue. If that truck's still under warranty, I'd leave that to KW, because wiring on these trucks is a MF.
     
  3. repairVSreplace

    repairVSreplace Bobtail Member

    Joined:
    Feb 17, 2015
    Messages:
    1
    Thanks Received:
    0
    0
    Try updating the CECU software. .5 hours at a dealer. Everything runs through this critter.