turn signal worrks when the lights are off

Discussion in 'Freightliner Forum' started by jess-juju, Jan 14, 2014.

  1. jess-juju

    jess-juju Road Train Member

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    Feb 19, 2008
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    I have a 1997 Freightliner classic, the turn signals on the left side work with the lights off but when you turn on the lights they stop working the marker light s are on but no blinking. I have replaced the turn signal switch and re wired the turn signals what else could it be.
     
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  3. misterG

    misterG Road Train Member

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    Do all the lights work on the left side, when turned on?
    Fuse?
     
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  4. fortycalglock

    fortycalglock Road Train Member

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    Man o man, I just chased this exact same gremlin in my Western Star. It ended up being the LED fender mounted turn signal. The marker light on the side of it"s wire was crimped between the body of the light and light itself. It came like that from the factory, but took the vibration of the truck a few months to start shorting out. I also had an issue on the other side doing this where some wires had rubbed and started shorting out. Turn signals would work in both instances without lights but not with. 4 ways would work half the time with lights. I see some trouble shooting in your future. If you always pull the same trailer, pull the pigtail to eliminate the trailer being part of the problem.
     
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  5. Powder Joints

    Powder Joints Subjective Prognosticator

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    You have a ground problem.
     
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  6. jess-juju

    jess-juju Road Train Member

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    Shelbyville TN
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    all lights are on, the 4 ways work, right side turn works, the left doesn't the arrow light for the left side is lit constantly whether the turn signals are on or off. with the lights off all work as they should.
     
  7. WitchingHour

    WitchingHour Road Train Member

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    Do you have LED bulbs, by chance?
     
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  8. KW Cajun

    KW Cajun Road Train Member

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    You left out a major part. Does it malfunction ONLY with a trailer hooked up, or does it do it also bobtail style?
     
  9. jess-juju

    jess-juju Road Train Member

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    Shelbyville TN
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    Problem fixed it turned out it was the Led turn signal on the left hand side such an easy fix :biggrin_25511: The one that hangs of the mirror.

    Thanks for all the replies.
     
    Txmade1993 Thanks this.
  10. misterG

    misterG Road Train Member

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    Its always the easy stuff, ain't it :biggrin_2552:.....glad you got it fixed....
     
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