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379 stop/brake/turn/tail lamp issue.

Discussion in 'Peterbilt Forum' started by buckfarmer, Jul 10, 2016.

  1. Jul 10, 2016 #1
    buckfarmer

    buckfarmer Bobtail Member

    2
    0
    Jul 10, 2016
    0
    needed to change passenger tail/ marker/ turn / brake light. a prong was corroded. changed the plug and replaced the light. new light works as turn/4 way, and brake but does not work as a marker. checked harness all the way across to driver side and even checked factory harness splices. the new light works on driver side in all capacities. any suggestions? thanks
     
    buckfarmer, Jul 10, 2016
    buckfarmer, Jul 10, 2016
    #1
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  3. Jul 10, 2016 #2
    BoxCarKidd

    BoxCarKidd Road Train Member

    4,483
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    Aug 26, 2014
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    Your description is not very clear to me but a bad ground I thank.
     
    BoxCarKidd, Jul 10, 2016
    BoxCarKidd, Jul 10, 2016
    #2
  4. Jul 10, 2016 #3
    mslashbar

    mslashbar Medium Load Member

    601
    808
    Jul 22, 2009
    elizabeth,co
    0
    Get a test light and see if power is coming through the plug for your running light. If no power coming through then you have a broken wire somewhere. If you have power coming through then make sure the prong is making contact.
     
    mslashbar, Jul 10, 2016
    mslashbar, Jul 10, 2016
    #3
  5. Jul 10, 2016 #4
    AModelCat

    AModelCat Road Train Member

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    Canuckistan
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    There would be 3 wires on that pigtail correct? Did you hook them up properly and not accidently reverse the stop/turn lead and the tail light lead?
     
    AModelCat, Jul 10, 2016
    AModelCat, Jul 10, 2016
    #4
  7. Jul 10, 2016 #5
    swaan

    swaan Road Train Member

    2,942
    4,374
    Jul 12, 2009
    BC canada
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    Just check to see if you have power at the light. If so could be a defective light.
    Just because it's new don't mean a thing.
     
    swaan, Jul 10, 2016
    swaan, Jul 10, 2016
    #5
  8. Jul 20, 2016 #6
    Iann128

    Iann128 Bobtail Member

    13
    1
    Jun 21, 2009
    Riverview, FL
    0
    It could be the wrong light, does it have a connector on both sides of the housing? Had this issue just this week on one that had the wrong light housing. The ones with a connector on both sides are only wired for one side of the truck...
     
    Iann128, Jul 20, 2016
    Iann128, Jul 20, 2016
    #6
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