70 GTO...putting the pieces back together after a botched restoration effort by a so called expert. Anyway, I reinstalled the dash and plugged it all together. When I pulled the light switch the passenger side low beam works. The drivers side the low beam is very dim and there seams to be a voltage bleed to the high beam as there is a faint glow from that headlight too. I hit the dimmer switch and no high beams at all. All other lights are functional. Directionals, parking, and rear lights work fine.
Before I pull the nose off and start replacing harnesses, does anyone have any ideas on where to start a trouble shooting effort?
Any help for this neophyte would be appreciated.