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Turn Signals Coming on Under Braking

Discussion in '2nd Gen. Tacomas (2005-2015)' started by lowchef, Oct 27, 2009.

  1. Oct 27, 2009 at 2:24 PM
    #1
    lowchef

    lowchef [OP] Member

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    got a 07 x-runner....Took a hour trip yesterday.....now when apply the brake the passenger side front and rear turn signals light up....weird.....uh

    checked for shorts and what not, cant find anything wrong.....

    any help would be appreciated!!
     
  2. Oct 27, 2009 at 2:28 PM
    #2
    65tacodude

    65tacodude Well-Known Member

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    do you have a towing harness? Similar thing happend to my dads 1st gen and it turned out the towing harness was installed wrong
     
  3. Oct 27, 2009 at 2:42 PM
    #3
    lowchef

    lowchef [OP] Member

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    i do have a tow hitch....but i never use it or messed with it....it looks ok?
     
  4. Oct 27, 2009 at 4:28 PM
    #4
    Fortech

    Fortech Well-Known Member

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    The signal converter box is screwed on your harness. Disconnect it to confirm.
     
  5. Oct 27, 2009 at 5:37 PM
    #5
    lowchef

    lowchef [OP] Member

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    where would that be located???
     
  6. Oct 27, 2009 at 7:39 PM
    #6
    lowchef

    lowchef [OP] Member

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    ok i disconnected the t-harnesses from the taillights and plugged them back to factory harness....lights seem to work properly now...weird??

    does that mean the trailor harness is faulty.....Never had any problems with it before...

    what needs to be replaced?
     
  7. Oct 27, 2009 at 7:41 PM
    #7
    Fortech

    Fortech Well-Known Member

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    Replace your trailer harness, sounds like water got inside that black box and shorted some stuff out.
     
  8. Oct 27, 2009 at 7:43 PM
    #8
    shawnd2

    shawnd2 Well-Known Member

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    Check to make sure the harness isn't corroded. This exact thing happened to me, when I applied the brakes the terminals on the harness (at the trailer connector end) where corroded enough to "touch". This caused the voltage to back feed to the turn signals.

    Shawn
     
  9. Oct 27, 2009 at 7:43 PM
    #9
    shawnd2

    shawnd2 Well-Known Member

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    Check to make sure the harness isn't corroded. This exact thing happened to me, when I applied the brakes the terminals on the harness (at the trailer connector end) where corroded enough to "touch". This caused the voltage to back feed to the turn signals.

    Shawn
     
  10. Oct 27, 2009 at 8:47 PM
    #10
    Ocean's

    Ocean's Well-Known Member

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    Great tips Thanks guys...
     
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