Hi everyone,

I had an aftermarket stereo installed in my '89 420sel along with new speakers and speaker wire. I had the Becker unit rebuilt and would like to re-install it.

I can't find a diagram or anyone who seems to be able to provide a general idea how this system is wired. The fader was "cut from the loop" and I would like to use it again if possible.

Any information would be appreciated. The guy from Becker said they do not have diagrams and 3 Mercedes dealerships said the same thing.

Thanks in advance for any information.