Head Units View - Mercedes-Benz MY2001 C-Class COMAND 2.0 Instructions For Use Manual

The two antenna connectors, one fiber optic connector, one power/etc connector (A), and one signal/CD
connector (C) are removed from the existing head unit when you pull it out. If you don't have the Bose
audio system there will be speaker wires in the "B" connector, otherwise that connector is empty as on
mine. With the exception of the "C" connector all of those are going to plug back in to the COMAND unit,
as is. The "C" connector needs to be modified. You can see the difference in the back of the head units in
these two pictures.
Audio 30 Alpine (US-Spec) head unit
COMAND 2.0 head unit