Hazards don't work with headlights on

[cdowns]

Originally Posted by Aljohnsonii

I have one and no one responded

that is not true vet vette told you 3days ago to check your grounds !!! did you check or try running supplemental ground wires in the three days since he told you what your problem was

[Aljohnsonii]

Yes I had ran the grounds along time ago I grounded battery to engine engine to body body to frame engine to frame and bed to frame

[cdowns]

Originally Posted by Aljohnsonii

Yes I had ran the grounds along time ago I grounded battery to engine engine to body body to frame engine to frame and bed to frame

go to electrical section and READ what you were told to do and do it

[Aljohnsonii]

I did everything that was suggested I ground every thing then engine has 3 grounds on it the body has 3 grounds the front turnsignal housings was grounded out and the rear housing was grounded out I replaced the turn signal switch the headlight switch. I read that post over and didn't see anything I haven't done or tried

[VetteVet]

You can also have a connection problem on the power side of the circuit which will cause the same issues. Like was said about the headlight switch.
Start at the battery terminal and clean it and the inside of the cable. Then clean the terminal on the fender where the fusible link goes, check the link and maybe put a new one on. They have been known to corrode inside and create a high resistance.

There is a three way connector inside the harness by the left headlight and then one red 12 gauge wire goes to the firewall block that carries all the power to the dash and cab and fuse panel.

This block will sometimes corrode inside and cause the terminals not to carry current well.
You might pull the block off and check the wires inside.

After the wiring comes into the cab there's another junction with the red wires that feed the horn relay the head light switch the key switch and the fuse panel.
you could bypass the firewall block and run a wire from the battery positive post to the ignition switch and then check the lights and hazards. You can also run this wire to the ign-unfused terminal on the fuse panel and check to see if the panel is where the problem is.

The head light switch does not control the turns or hazards, they come out of the fuse panel from a wire from the key switch, Study the two diagrams below and you'll see the junctions of the red wires and where they go.

Here's your engine wiring.




Here's the wiring to the inside of the cab to the horn relay and the fuse panel.




Here's the wiring to the ignition switch and the fuse panel.



Ignore the arrows. They are for other threads.

[Aljohnsonii]

I fixed it previous owner had mixed up wireds on tail light harness cut the tape off the harness and redone all wireing from firewall back to tai lights everything works now thanks

[LockDoc]

Originally Posted by Aljohnsonii

I fixed it previous owner had mixed up wireds on tail light harness cut the tape off the harness and redone all wireing from firewall back to tai lights everything works now thanks

Glad you got it figured out. No way you can catch something like that with regular troubleshooting....

LockDoc

[Aljohnsonii]

No not at all thanks for all y'all help