There seems to be a loose wire - high beam not working on passenger side. Replaced bulb, but still not working - seems to be a ground wire hanging on the other side by the lights. Is there a diagram for wiring of passenger side high beam or any ideas as to how to get same to work.

 

sorry first post - issue with high beam is on 1968 cutlass s convertible (one owner car)

 

Yes the lighting harness has a dedicated ground wire but that probably isn't why it's not working. Is it the original harness? 68 light harnesses have a issue with burning up at the body connector location.


I have a 68 wiring diagram I can e-mail you if you PM me your email address

 

Since the passenger side is connected off the drivers side it should not be very difficult to figure out. follow the wire hanging back to the source and see if its indeed your lighting ground. If so, connect it. I have had new bulbs out of the box be bad also.

 

Yeah, there's not much to this - Three wires: High, Low, and Ground, and only the High and Ground go to the high beam bulb.

They run across the core support to the driver's side headlights.

Just use a test light and follow along to see where the connection goes away.

- Eric

 

And the ground (black) wire on both sides need to be securely grounded.