Isolated problem w front pass side turn signals..need help - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**DeadheadNM** · 12-30-2011, 09:45 PM

My front passenger side turn signals aren't working and I'm not sure why and I didn't see any relevant posts so hoping for help.

The running lights on this side work fine as does the same side rear turn signal. The problem is isolated to the side marker light and front bumper light, which don't blink. I suspect a problem with the forward harness.

Driver side lights all work fine.

Any ideas?

Thanks, Pete

**LockDoc** · 12-31-2011, 12:08 AM

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I would start with a tester at the light and test the socket, then go to the plug at the core support, then go to the firewall connector, etc. Just keep chasing it back until you find power.

LockDoc

**DeadheadNM** · 12-31-2011, 02:22 AM

Quote:

Originally Posted by LockDoc

-
I would start with a tester at the light and test the socket, then go to the plug at the core support, then go to the firewall connector, etc. Just keep chasing it back until you find power.

LockDoc

Thanks LockDoc but I have power to the lights (parking lights work) they just just don't blink....same side rear lamp and all on the opposite side all blink. Why no blinkie?

TrucknAndy · 12-31-2011, 02:58 AM

I had a similar issue on my 72. A test light is your bestfriend as LockDoc pointed out. Hook it to a ground, turn your affected lights on, and go to town. The issue is likely between your driver-side and passenger-side. You may need to unwrap your harness and chase your wires from the passenger-side all the way to the firewall. Mine ended up being a melted wire in the portion of the harness that runs between the fender and wheel well. Just be patient and go slow...it may seem like a huge mess of wires, but once you attack it with the test light and seeing what does what when you work the headlight, highbeam, and turn signal switches. Best of luck...

Andy

DaBigKahuna · 12-31-2011, 03:04 AM

Quote:

Originally Posted by DeadheadNM

Thanks LockDoc but I have power to the lights (parking lights work) they just just don't blink....same side rear lamp and all on the opposite side all blink. Why no blinkie?

Those bulbs have a separate light for parking and for signaling. Just because you have power on the parking light side doesn't mean that you have power on the signaling side.

**DeadheadNM** · 12-31-2011, 03:06 AM

Quote:

Originally Posted by DaBigKahuna

Those bulbs have a separate light for parking and for signaling. Just because you have power on the parking light side doesn't mean that you have power on the signaling side.

I'll check, thanks....

cdowns · 12-31-2011, 07:47 AM

try a new light bulb

12-30-2011, 09:45 PM	#1
DeadheadNM Carpe manana Join Date: Dec 2010 Location: Eau Claire, WI Posts: 12,446	Isolated problem w front pass side turn signals..need help My front passenger side turn signals aren't working and I'm not sure why and I didn't see any relevant posts so hoping for help. The running lights on this side work fine as does the same side rear turn signal. The problem is isolated to the side marker light and front bumper light, which don't blink. I suspect a problem with the forward harness. Driver side lights all work fine. Any ideas? Thanks, Pete __________________ 1972 K5 CST Highlander Blazer: http://67-72chevytrucks.com/vboard/s...d.php?t=708547 1972 K20 Cheyenne Super: http://67-72chevytrucks.com/vboard/s...d.php?t=528308 Members met: ORANGBLAZ, 2003 silverado, MikeCofield, BB72CHEVKT, Duncan&Son, Sameyrasmea72, THENEWMEXICAN, HotRod C/10, brianthelion02, Sport/Truck, ryanroo, michael bustamante, Dirt's72, Already Gone, WestButteTruck, 57taskforce, Moreyel, painterljp, AASmedic, SoCoC10, Lumaestas, carbuff382, Chevyland

12-31-2011, 12:08 AM	#2
LockDoc The Older Generation Join Date: Aug 2006 Location: Montezuma, Iowa Posts: 25,772	Re: Isolated problem w front pass side turn signals..need help - I would start with a tester at the light and test the socket, then go to the plug at the core support, then go to the firewall connector, etc. Just keep chasing it back until you find power. LockDoc __________________ Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 -

12-31-2011, 02:58 AM	#4
TrucknAndy Registered User Join Date: Jun 2011 Location: Wichita Falls, Tx Posts: 69	Re: Isolated problem w front pass side turn signals..need help I had a similar issue on my 72. A test light is your bestfriend as LockDoc pointed out. Hook it to a ground, turn your affected lights on, and go to town. The issue is likely between your driver-side and passenger-side. You may need to unwrap your harness and chase your wires from the passenger-side all the way to the firewall. Mine ended up being a melted wire in the portion of the harness that runs between the fender and wheel well. Just be patient and go slow...it may seem like a huge mess of wires, but once you attack it with the test light and seeing what does what when you work the headlight, highbeam, and turn signal switches. Best of luck... Andy

12-31-2011, 07:47 AM	#7
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: Isolated problem w front pass side turn signals..need help try a new light bulb __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY

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