| Interesting thought. The ultimate source would be to ask a mercedes mechanic, they should know everything. I don't know if you have one around, i do so that's where i would go. Check manuals for both cars. You could probably even email the national headquarters. They are really good usually. I asked them once for some cruise control diagrams and they sure enough mailed me a packet with a bunch of print outs (taken from authentic German sources). So, definitely check with someone who does Mercedes professionally. | 
