Carefully remove the trunk liner on the drivers side of the trunk. You will find an orange, small diameter, cable.....this is the fiberoptic cable and BE CAREFUL NOT TO BEND IT! Look at the connectors on the changer and seperate the existing connector in the trunk. Everything should plug right in. If you still require assistance, do what I did ad call MB USA and ask for tech help. They were kind enough to fax me some pages out of the tech manual.

Good Luck!!!!

EJ