does anyone know if there is a wiring diagram available for 2012 C250.

thx

Yes, there is a wiring diagram for every system in your car. You have to subscribe to the Mercedes StarTekInfo. Its expensive, but cheaper than going to a dealership. Get a 1-day subscription and print out as much as you can so that you don't have to pay the subscription every time you need it.

Or you can just buy the complete service manual CD-ROMs on e-bay (like I did) for $16.46 and be done with it. It works perfectly!
http://www.ebay.com/itm/MERCEDES-BEN...BTtg1V&vxp=mtr

Wow, that's appears to be a great deal! I may have to invest in one of these sets.

It will pay for itself the first time you use it.

Thanks I wish I had seen this sooner. I bought a manual from Tradebit / Repairsurge on the web for $19. It was for a Mercedes 2006 C230 specific. It was mostly generic bs. Had trouble OBDII trouble codes which you can get for free and non-specific generic instructions for brake replacement etc. All in all a worthless POS.