Got a pair of Euro Headlight assemblies and the pin connectors on e-bay last year and they are sitting in a box in the garage gathering dust. I want to swap out my old US style (which are pretty beat up) on my 1985 300TD. If anyone has info on how exactly to do the swap (details, diagrams, knows of a book or article, etc) and if I need anything else that would be really great.

NOTE: I do not have any of the Euro vacuum actuated height adjusting Harware but I can live without that.

Thanks,

Neil

I used a multimeter and made a diagram of the pins in the connector on the car and indicated on the diagram which pin was which. In other words, turn on the headlights and see which pin is hot, turn on the high beams and see which is hot, foglights, etc. Note color of each wire.

THEN, use the ohmmeter to determine which plug in the headlight is which. Then pull the back off the connector on the car and move the pins around to match up.

It could be that someone here has a diagram that they can share, but mine was just scratch paper and I threw it away after I was finished.

Good luck,

This reference provided the connections for the W126:

http://www.mbcanada.com/forum/index.php?showtopic=554

I cannot confirm if the W123 is identical, but, it might be a start for you.