Hello Everyone,

I'm looking for help with a headlight issue. I have a 2003 Cavalier and both headlights are very dim on high or low beam. Neither one seems brighter than the other. I have put in "brighter" bulbs with no difference. Any help would be greatly appreciated. Thank you.

 

Check the ground circuit.

 

Whats the lenses look like?

 

Thanks guys. The lens are ok. I polished them recently because they were quite cloudy. As far as checking the ground circuit, are there certain color wires I should check? I'm reasonably mechanical but not that adept with electrical. Thanks again for the help.

 

Look at ALL the wires near the battery. I believe there is a ground under the battery.

 

Take a voltmeter and measure the voltage between the ground of headlight bulb and battery negative terminal - while the headlight is on of course. If it measures more than 0.1 V you have a ground problem.