1968 gmc need turn signal help

[Aljohnsonii]

I have 1968 gmc pickup swb my turnsignal of passenger side front doesn't flash with the head lights on. It will flash when headlights are off and when on just light up I've changed the headlight switch the flasher relays and the turn signal cam I would like to see if anyone has ran into this problem and know how to fix it this is all need put her on road thanks

[Scottcoda]

I had the same type of problem with my turn signals, after trying a million different things, what finally corrected it was connecting a ground directly to each turn signal housing.

[KevsClassics]

I agree. You are not getting a good ground to that lamp.

[Aljohnsonii]

I grounded out the turnsignal and it still doesn't flash with lights on it there a ground under the dash that goes to the turn signals and light harness

[KevsClassics]

Usually looses ground where the bulb socket is crimped to the lamp assembly. Did you try grounding at the bulb itself?

[Scottcoda]

Originally Posted by Aljohnsonii

I grounded out the turnsignal and it still doesn't flash with lights on it there a ground under the dash that goes to the turn signals and light harness

Make sure both turn signal housings are cleanly grounded, not just the one with the problem, They both need to be grounded for the lights to function. The housing units have a screw mount on the backside of them that makes it really easy to ground, I mention it b/c the previous owner of my truck must of removed the grounds trying to fix something, I never noticed the stubs till my frustration with my the lights made me remove them from the grill.

[Aljohnsonii]

I grounded light at the bulb. Still same problem. I have the grounds on the back of the housing that's the way it's bolted to the frame. I'm guessing that is the ground for the housing I dont see any where to mount a wire. im going do direct grounds this weekend when I'm off and have alittle daylight. I did notice that when the turn signal is on I'm also getting flashing from my gauge lights.

[Aljohnsonii]

Still haven't fixed the problem I know when I cuty headlights on and turn the turn signal on on the passenger side the tail lights flash like hazards are on and the from left just lights up