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Trailer lights not working while light switch is flipped down to run with marker lights

Discussion in 'Freightliner Forum' started by Freightshaker157, Sep 27, 2020.

  1. Sep 27, 2020 #1
    Freightshaker157

    Freightshaker157 Bobtail Member

    2
    0
    Sep 27, 2020
    0
    When I flip my light switch down to run just marker lights on truck and trailer, the lights on truck work but none of the lights work on my trailer. I've bought a new switch and put it in thinking it was the switch but im back to square one. If anyone has an idea let me know thanks!
     
    Freightshaker157, Sep 27, 2020
    Freightshaker157, Sep 27, 2020
    #1
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  3. Sep 28, 2020 #2
    RocketyMan

    RocketyMan Medium Load Member

    527
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    Jun 5, 2015
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    @Freightshaker157
    Nobody knows what truck you are talking about. You posted in the freightliner section--and that's just about all.

    Post your year, make, model, and last 6 of vin if you want any reasonable help.
     
    RocketyMan, Sep 28, 2020
    RocketyMan, Sep 28, 2020
    #2
  4. Sep 28, 2020 #3
    wichris

    wichris Road Train Member

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    Jan 17, 2011
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    Interrupt switch.
     
    wichris, Sep 28, 2020
    wichris, Sep 28, 2020
    #3
  5. Sep 28, 2020 #4
    ZVar

    ZVar Road Train Member

    10,911
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    Sep 10, 2010
    Flint, MI
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    Fist thing is the pigtail getting power? Is the pigtail plug on the tractor getting power for those lights? Is it all the lights o (i.e. brake also, or just the marker lights?)

    Did you do the simple things like check the proper fuses?
     
    ZVar, Sep 28, 2020
    ZVar, Sep 28, 2020
    #4
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