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Scott S


Scott S
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If it's both turn signals and brake lights but nothing else, then first check the ground wires/chassis grounds back in the trunk corners.  +12V supply is entirely separate for those two systems but they DO share common ground locations, so that's the place to start!

Edit: would also suspect reverse lights, tail lights, and fuel level gauge to be acting up in this case, as those also share that same ground location.

Edited by AustrianVespaGuy
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Turn signals are on fuse 6, shared with backup lights and horn; brake lights are on fuse 5, shared with the wipers and windshield washer.  So to eliminate fuse problems, check those functions that share their respective fuses.  If wipers and backup lights work, then the fuses are OK.  

 

The turn signals are wired through the hazard switch--and a malfunctioning switch can keep the turn signals from functioning even if the hazards work.  I encountered this problem on a friend's car and did a column on how to troubleshoot and (possibly) repair the switch.  If that turns out to be your problem, PM me for a copy. 

 

As for the brake lights, to test the switch, turn the ignition on and bridge the two terminals on the brake light switch (atop the bracket holding the power brake booster with two wires attached).  If the brake lights now work, the switch is the problem.  They can sometimes be revived by pressing the switch's button on the way in and letting it snap back a couple of times.  Otherwise, it's new switch time.  They're inexpensive and easy to replace.

 

mike 

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