1997 C class and Motorola cell phone?

I have a 1997 C class with the built in mercedes cell phone in the center arm rest with a "quick dial" on the dash. As well as the intergrated mic and speaker. My question is this....

Does anyone have the wiring diagram for the phone connection? I want to replace the stock cell phone with my Motorola v.3682 cell phone. I figure if someone has the wiring diagram for the stock phone I could figure out a way to connect it to my phone.

Anyone try this or better yet anyone sell a kit?

thanks!