My left headlight is out. I don't have voltage at the plug. I have traced it back to a harness that goes over the wheelwell, by 2 relays. I don't have electrical scematics for the car, can anybody tell me where the wires go? The right headlight and center high beams work fine. Thank you!!!

It goes to the fuse box

Check your fuses...there are usually seperate fuses for right and left headlights (for safety - so if the fuse blows it won't knock both lights out). I would bet a nickel you've just got a blown or broken fuse. Clean up the contacts before replacing it. Here's the electrical service data for your car, look at Page 10:

http://skinnerbox.steaky.org/Service/W123/w123CD2/Program/ETM/82_240.pdf

Check Fuse #13, it is only for the LH low beam!

Here's the complete service manual set:

http://skinnerbox.steaky.org/Service/W123/Index/616index.html

__________________
Marty D.

2013 C300 4Matic
1984 BMW 733i
2013 Lincoln MKz

It was fuse 13, bad contact. You are the best. Now I can pass inspection!!! Thank you again!!!

This has been driving me absolutely batty. I've replaced my right headlight twice and it still doesn't work. It never occured to me that merz might use separate fuses for left and right. I will give that a try.