I just boughta 68 coupe and took the guages out to replace the left turn signal indicater bulb and painted the guage carrier while I had it apart.

I noticed that there were 2 screws on the printed circuit board that i assume were grounds and tightened them up. The left turn siganl bulb was not burned out and is now working after tightening the screws.
After putting it back together, whenever the headlights are tuned on the turn signal indicators light up steady, but blink when the turn signal is turned on. Is this normal?

Also, when the headlights are turned on, the fuel guage drops below empty...I am not sure if it did this before or not...

 

Not normal Sounds like a bad ground

 

It is a bad ground. Usually at the upper center screw where the high beam indicator bulb is. Scrape or clean the paint off the dash where the ground strap contacts the dash. When you take it back apart, check and clean all ground areas real good.

 

That was it.....thanks alot...this forum is awesome