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Old 10-28-2014, 09:31 PM   #11
JJorgensen52
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Join Date: Apr 2007
Location: Southeast CT
Posts: 1,472
Re: Left brake light goes out when right blinker on??

Problem solved!

First off, for those that said check your grounds - while it was not the source of this problem, I did in fact find my taillight housing screws loose and causing the running light to blink on and off. Tightened them up, all set.

Now on to the original post:


See between the horn contact post and the shifter in the top of the column, about 2 o'clock? There is a little teeny plastic tab on the turn signal cam which limits the travel. In the photo, you can see the lower one at about 4 o'clock (right turn) broke off on my truck, which allowed the cam to actually go TOO FAR to the right, past the taillight contact, breaking the circuit.

Easy way to diagnose this: push the turn signal stalk towards the side that's having trouble, but not all the way there, and see if the brake lights work.

I purchased a replacement cam at the local parts box and voila! lights all work as they should. That said, now my turn signal cancel feature doesn't work - it's like the new cam is slightly larger and doesn't quite engage the cancelling cam? Anyone had that problem?
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