I'm restoring a recently purchased 1988 300CE. The front right parking light doesn't get current when the dashboard switch is on. Current flows to fuse #3, which is the fuse for the circuit. If this was an American car from the 1960's, I would know that there was a problem in the wire running from the fuse box to the bulb. The schematic says that the wire runs from the bulb socket to a "light control unit" before running to the fuse box.


What and where is the light control unit? The grey wire with red stripe disappears into a snake pit of wiring. It will be very difficult to trace it to the light control unit without cutting a lot of wiring harness apart.


Wisdom is appreciated. This is my first Mercedes. I'm new to this insanity.

I think this explains it pretty well...

https://youtu.be/fTcDHqjo8_w

there's a picture for location in this thread-

http://www.peachparts.com/shopforum/tech-help/271407-red-fuses-behind-box-relay-w124.html

you have to remove the 6 phillips head screws on the fuse box to see it, not just the lift-up lid. good luck, chuck.

Thank you Mike Bear & "Pork Face"!! The symptoms described in Mike's You Tube video describes my situation. One running light is out, but no dash warning light. I had already done a web search regarding the light control module and found it in my car. I've removed it and will open it up tomorrow.

Thanks for you help!!!! Much appreciated!

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