68 turn signals - Team Camaro Tech
Electrical & Wiring Troubleshooting electrical.

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post #1 of 4 (permalink) Old Jun 6th, 15, 08:17 PM Thread Starter
Bob TirkoC
Join Date: Aug 2013
Location: Utah
Posts: 16
68 turn signals

Both front and rear left signals wont work with headlights on. They function properly with headlights off. I cleaned the ground in the trunk and on radiator support. Any ideas?
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post #2 of 4 (permalink) Old Jun 6th, 15, 08:23 PM
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Location: Hopewell, Virginia
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Re: 68 turn signals

Check the light bulb sockets they go bad too. You can get replacement sockets from the Auto Parts Store.
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post #3 of 4 (permalink) Old Jun 8th, 15, 09:27 AM
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Location: Frisco, TX
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Re: 68 turn signals

Have you tested the headlight switch? Also, does applying the brakes cause the flashers to stop? That is a sure sign of no ground.


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post #4 of 4 (permalink) Old Jun 8th, 15, 12:03 PM
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Re: 68 turn signals

I don't know a lot of specifics on the Camaro's but if the headlights and front lights have dedicated grounds and they are all on the radiator support then possibly the radiator support being bolted to the fenders and then to the firewall are not electrically sound ?.

I've seen some GM's with the pigtail for the battery negative bolted to the fender and sometimes if the fender, radiator support, and firewall are painted heavily, they may be solid mechanically but electrically poor.

If the front lights work with the headlights off and then when the headlights are turned on, maybe the ground is poor and now everything is being shared but I would think in that case the headlights might be somewhat dimmer but who's to say without a reference brightness to go by.

Maybe too try running a test jumper from the bulb socket or the housing of the bulb to the battery negative terminal and see what happens.

I've also seen light sockets crimped to housings and while it might be mechanically solid, electrically it's poor.

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