Hi,

Becker (www.beckerautosound.com) Has the 6 disc Silverstone model 2662 to plug right into your harness. The harness is behind the left hand side inner trunk panel. The fiber optic cable is orange and there is 1 more connector wrapped up in the harness which is your power/ground/wake-up portion that plugs into the cd changer. Make sure you have the radio programmed at your local Mercedes-Benz dealership after you install it, because the cd changer will work for a little while then display no cd magazine. I have run into this before, but not all radio do this that are not programmed. I would have my car programmed though. It takes Mercedes less than 5 minutes to do with the Hand Held Tester they have. Hope this helps you out!

Jim LaPlant
Factory Mercedes-Benz Technician