Pontiac Problems? Ask a Mechanic for Answers ASAP
HI there, I am Cam.I am sorry to hear about this issue. It is a common issue though. This system uses a single power source to the light bulb, then the switch applies ground to the light it wants on. To have both dim suggests power is not fully getting there. I have seen countless cars like this with wiring issue along the front where the wiring runs to that bulb. Nicks in the wire cause corrosion inside to eat away at the wire and cause this issue.I would start by tracing the wiring back from the headlight to the other side. The wring then splices with the other headlight behind the left side to link them together. I am confident you will find the issue along there.