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Rear trailer upper marker lights

Discussion in 'Ask An Owner Operator' started by Flatbedotr, Mar 15, 2024.

  1. Mar 15, 2024 #1
    Flatbedotr

    Flatbedotr Light Load Member

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    Nov 26, 2018
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    I have a 21 Pete 579. The last 4 trailers I have picked up, the rear upper marker lights aren’t working. Within the last month the green power cable has been replaced. Could the problem be a bad fuse or a bad pigtail on the truck side? It seems ridiculous to assume that so many trailers in a row would have bad lights.
     
    Flatbedotr, Mar 15, 2024
    Flatbedotr, Mar 15, 2024
    #1
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  3. Mar 15, 2024 #2
    Deere hunter

    Deere hunter Road Train Member

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    Shallowater Texas
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    Take a test, light and test your pigtail off your truck. The trailer lights will be the top left and the top right the very top one will be your ground. If one's not working that's your problem, and it's probably a fuse.
     
    Deere hunter, Mar 15, 2024
    Deere hunter, Mar 15, 2024
    #2
    Siinman Thanks this.
  4. Mar 15, 2024 #3
    abyliks

    abyliks Road Train Member

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    ludlow MA
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    Check fuses There should be a different circuit for upper clearance lights
     
    abyliks, Mar 15, 2024
    abyliks, Mar 15, 2024
    #3
    Siinman and 25(2)+2 Thank this.
  5. Mar 15, 2024 #4
    tscottme

    tscottme Road Train Member

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    Somewhere out West, in my mind.
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    On my Volvo, those upper rear, middle marker lights being out always meant a bad Trailer Marker LT fuse was burnt.
     
    tscottme, Mar 15, 2024
    tscottme, Mar 15, 2024
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    Siinman Thanks this.
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