Goat, there's some info here that might help ...
<a href="http://www.benzworld.org/forums/forums/thread-view.asp?tid=1176979&posts=1&fid=29" target=new>Click!</a>
I ordered the entire harness just for the connector and tried to re-wire it, but the voltage dropped down to 3v for some reason, so I tapped into the rear power outlet.
Also note that you can use a fiber optic harness from a C Class and save a little money! Also, MB relocated the CD changer connector (the one you unlock to swing the changer out) from '00 to '01 - expect a slight problem there.
It's quite a project - but for the effort and $, I'm not sure I'd do it again.