1999Z24 Headlight Problems NEED help!

Ok so i bought my girlfriend a 99Z24 sweet car i must say but for some odd reason the left side headlight is very very dim. I have messsed around with the wires to try to find a bad ground and i can't seam to find anything. I even replaced the light bulbs.

Dose anyone have any idea what i should look for/replace.

She is really getting on me about fixing this and i don't even know how.

I would really appreciate any help
Thanks,
Tom

There are two wires supplying power to these units, on for high, one for low on the beams, and a ground. If both are dim, the ground is likely the problem. If you cannot find the ground by tracing the wiring, make a new ground by extending the wire and grounding it somewhere yourself. If only the low beam is affected, you might try locating the wire supplying voltage to it and check it for problems. At worst, you have the good light to use for comparison. Ray

Both high and low beams are very dim and i did try looking for a ground and didn't have any luck.

Ok what dose the ground wire look like? Dose anyone know? I'm used to just looking for a big black wire connected to the frame or soemthing. What should i look for on this car?

Try using a multimeter or a test light.