Brake Light and Turn Signal Issue 82 c10

[Cpmskinny]

I have an 82 c10. I’ve been chasing some kind of gremlin for a few weeks and I’m at a loss. Looking for some suggestions as I couldn’t find my issue doing a search on previous threads.

My turn signals are inoperable, the front comes on solid and nothing happens in the rear. My running lights all work, and my brake lights are also inoperable. So far I’ve done all the following:

Replaced all bulbs
Replaced every bulb socket
Replaced brake switch
Replaced turn signal switch

It has to be a ground issue somewhere, but I’m at a loss. Don’t know what else to replace. Any help would be greatly appreciated.

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[Ricko1966]

It's not ground,if the taillights work.Id inspect the rear taillight harness real good and the wiring to the rear good. Turnsignals and brake share the same hot lead.

 

[Jgonick]

Incandescent or LEDs bulbs?
I have to ask- are you sure you are using the correct bulbs?-brake lights & front turn signals are dual filament bulbs.

 

[Cpmskinny]

Incandescent or LEDs bulbs?
I have to ask- are you sure you are using the correct bulbs?-brake lights & front turn signals are dual filament bulbs.

I am, 1157 for the turn signal and brake light. Dual filament.

 

[Snoots]

There is a ground at each taillight. You have to remove the lens AND fixture to see them.
That would be the first place I would check.
Hopefully the PO didn't bugger up the rear harness with a trailering wire.

 

[Cpmskinny]

It's not ground if the taillights work.Id inspect the rear taillight harness real good and the wiring to the rear good. Turnsignals and brake share the same hot lead.

I’ll do that. I did all the notch and stuff myself and I could have possibly damaged something in the process. Thank you.

 

[Cpmskinny]

There is a ground at each taillight. You have to remove the lens AND fixture to see them.
That would be the first place I would check.
Hopefully the PO didn't bugger up the rear harness with a trailering wire.

It looks like a black extension cord running to the back plug. I don’t think that’s how it looked from the factory. There were wire nuts all over this thing.

 

[Jgonick]

wiring diagram LINK
In case you didn't have the wiring diagrams. 1980 or 1983 should be pretty much the same as 1982.

 

[Cpmskinny]

wiring diagram LINK
In case you didn't have the wiring diagrams. 1980 or 1983 should be pretty much the same as 1982.

Thank you very much!

 

[Snoots]

It looks like a black extension cord running to the back plug. I don’t think that’s how it looked from the factory. There were wire nuts all over this thing.

I believe you've found the problem.

 

[Cpmskinny]

I believe you've found the problem.

No doubt it is a part of the problem 100%.