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. Freightshaker157

    Freightshaker157 Bobtail Member

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    Sep 27, 2020
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    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!
     
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  3. RocketyMan

    RocketyMan Medium Load Member

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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.
     
  4. wichris

    wichris Road Train Member

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  5. ZVar

    ZVar Road Train Member

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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?
     
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