Whenever I switch on the lights on my 1963 F85 Cutlass Convertible, the R.H. turn signal pilot light is also illuminated. Not the turn signal itself, just the pilot light and this reacts to the dimmer **** as well. With the lights off everything is as it should be regarding turn signal and pilot light.
Do I have a problem with the printed circuit? Or what else could it be?
Thanks, Peter

 

A lot of electrical issuies are a result of bad / missing ground but GMs pin connectors are a close second
Hav a 62 already apart if u need pix or parts
989 721 9432

 

Thank you for your advice. I may come back to you for pix, but first I'll have to remove the whole thing.

 

Check all grounds & th one that grounds th instrument clusster / circuit board especialy
Good huntin

 

As others said, anytime I experience the weird electrical events, such as yours, I check that there is good ground. Electricity wants follow the shortest path and goes a routing that creates events like yours. Perhaps the instrument lights grounding is the issue, while I suspect grounds the same way the turn signal pilot light does, via the speedometer gauge.
Had a similar situation with my taillights; turns out during reassembly, never got the bumper bolts fully tightened.