1988 GMC Jimmy drivers side turn signal

Tiny
JSUNDANCE
  • MEMBER
  • 1988 GMC JIMMY
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 174,000 MILES
For the life of me I cannot understand why the front turn signal doesn't work but the back one does. I found a blue wire disconnected that is on the bulb socket hooked it back up and the top marker lamp is now working but my turn signal bulb which I have replaced 2x's just to be sure isn't. I cleaned the gunk out of the socket and put the fresh bulb in and still nothing. I see a white wire and a black wire that are disconnected in the front of the car and have no idea what they are to either.
Tuesday, January 5th, 2010 AT 10:45 AM

4 Replies

Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Hi, did you try a testlite on the bulb socket, round bulb? The center of socket is voltage, you can use chassis ground for lite. You'll have to turn the key on, also activate the turn switch for whichever side your checking. For left turn, my info shows lite blue wire is voltage, black is ground.
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Tuesday, January 5th, 2010 AT 2:34 PM
Tiny
JSUNDANCE
  • MEMBER
  • 3 POSTS
Wierd thing is I hooked up a white/brownish wire and a black wire that were disconnected in the front and all of sudden it works now. Not sure how that is but it started blinking and comes on when I turn on the parking lights
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Tuesday, January 5th, 2010 AT 2:58 PM
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Hey, glad you got it working.
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Tuesday, January 5th, 2010 AT 4:22 PM
Tiny
JSUNDANCE
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  • 3 POSTS
Well sort of. The turn signal blinks but the parking light doesn't come on when I turn on the lights. Kinda at a loss now
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Wednesday, January 6th, 2010 AT 6:49 AM

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