So I have a 91 Camaro and about a week ago It was going to go for a little night drive and when I turned my lights on only one high beam turns on and the other three are off (Both lights on the driver side and the low beam on the passenger side). I checked to see if they are burnt out and they are not and Im not exactly sure what fuse to check for my headlights (Ya im the new kid and its my first Camaro). So does anyone have any ideas of what it might be??

 

You might make sure the ground connections for all of the headlights are in good electrical shape (clean connections where they mount).

The headlight switch could have a problem.
The high beam/ low beam switch might have a problem.
The connectors might need cleaned.