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  1. #1
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    Feb 2006
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    trailer Lights not working on one side....

    The brake and turn signal do not work on one side of the trailer. I bought the tester thing at BPS and they are all good to the back of the truck.... when I plug in the trailer the one side goes out. I tried switching the lights on the back to see if the light was not working but the other side does not work either when plugged into the bad side...

    The parking lights work... just no brake or turn signal.

    What can I look for to try and fix

  2. Every Man A Wildcat!! ReelDoc's Avatar
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    #2

    Re: trailer Lights not working on one side.... (bassanine)

    Weird light problems are almost always caused by GROUND problems. I'd start by checking the ground connection at the tailight on the dead side. Good luck.


    SSgt, US Air Force, 1967-75

    Veteran - a person who at some time in their life wrote a blank check payable to "The United States of America" in the amount of "up to and including my life".

  3. Member mattfish11's Avatar
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    #3

    Re: trailer Lights not working on one side.... (ReelDoc)

    <table width="90%" cellspacing=0 cellpadding=0 align=center><tr><td>Quote, originally posted by ReelDoc &raquo;</td></tr><tr><td class="quote">Weird light problems are almost always caused by GROUND problems. I'd start by checking the ground connection at the tailight on the dead side. Good luck.</td></tr></table>
    Truer words have never been spoken... "weird" light problems are issues with the GROUND!
    2014 Ranger RT188
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  4. Member
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    #4

    Re: trailer Lights not working on one side.... (bassanine)

    Thank you... I wiggled them but I'll take them off, clean and put back on just in case....

  5. Electrical/Wiring/Trolling Motors Moderator CatFan's Avatar
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    #5

    Re: trailer Lights not working on one side.... (bassanine)

    I know the tester says the truck is good, but what you've described makes me think a truck side problem. I'd follow the wire from the plug back and look for a poor quality splice someplace.

  6. Member
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    #6

    Re: trailer Lights not working on one side.... (CatFan)

    Can't believe I have to say a Cat Fan was right.... but he was so I'll give the credit where due. I have a converter between the truck lights and the hitch plug... it was shorted out on one side.

    Thansk for the suggestions, just wanted you to know what it turned out to be.

  7. Electrical/Wiring/Trolling Motors Moderator CatFan's Avatar
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    #7

    Re: trailer Lights not working on one side.... (bassanine)

    <table width="90%" cellspacing=0 cellpadding=0 align=center><tr><td>Quote, originally posted by bassanine &raquo;</td></tr><tr><td class="quote">Can't believe I have to say a Cat Fan was right.... but he was so I'll give the credit where due. I have a converter between the truck lights and the hitch plug... it was shorted out on one side.

    Thansk for the suggestions, just wanted you to know what it turned out to be.</td></tr></table>

    Took me close to an hour to figure it out since I spent 45 minutes staring at your avatar

    I did "grajuwait" from U of L though.

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