I found this site that will take a MB VIN number and give you schematics as well as part numbers. I am not sure how up to date the numbers are but even if they are old it would give a good starting point.

Part number site

I did not look to see if this was posted else where so my apologies if it's a dupe.

__________________
Sent from an agnostic abacus

2014 C250 21,XXX my new DD ** 2013 GLK 350 18,000 Wife's new DD**

- With out god, life is everything.
- God is an ever receding pocket of scientific ignorance that's getting smaller and smaller as time moves on..." Neil DeGrasse Tyson
- You can pray for me, I'll think for you.
- When you understand why you dismiss all the other possible gods, you will understand why I dismiss yours.