I have a 99 cavalier that I recently have purchased. Since I've bought the car, the left headlight is dim, not out, but dim. It stays the same whether the brights are on or not. Is there a way to post a picture on here? Cause I'll take a pic and put it up if this doesn't make sense. Now I've tried to change the bulb in it, all of them actually, and I still get the same problem. IS this like a ground issue maybe? All help is appreciated. Sorry if I didn't include enough info, just ask for whatever I forgot. THANKS

pull your connector off the back of the headlight and check you resistance value, from there narrow down the circuit to find the power robbing component.

You said you replaced the bulb, right? Can you check for power at the connector? You will need a multi-meter. See if you're gaetting battery voltage at the terminal. Then check the other terminal for continuity to ground.

had the same problem in my 2000 sunfire, long story short, i had 5 coroded wires, and it cost me like 300 canadian to fix the fucker, good luck post back when u know