Buick Repair Questions? Ask a Mechanic for Answers ASAP
I have a Haynes repair manual for this vehicle which has a headlight relay in the schematic. Autozone sells the relay for this vehicle application. Online I found the relay as an Airtex 1R1057.
Is your schematic for this vehicle?
Looks right. Ken
Both high and low beam are out.
Running lights work OK
Headlights come on when I pull back on the directional lever (to flash lights), so power and grounds to lights are probably OK
You will also need to check the head lamp switch. You are loosing a ground for the head lamps. In ether the dimmer switch or the headlamp switch. Ken
What gets me is that the lights can be turned on manually with the pull switch on the dash or they come on automatically at dusk.
Strange that Advantage Auto had a headlight relay for this car
Tighten Tighten the headlamp switch retaining screws to 1.8 N·m (16 lb in).