Greetings, all! I am the proud owner of an '87 244 DL (136K) with the factory CR-4123 radio installed. It's a good enough unit, and I have absolutely no desire to replace it with an aftermarket one. That would make my question moot, and my solution that much easier. I noted that the factory box has settings for balance and fade (which , for the uninitiated is the front-to-back balance). However, the car has speakers only in the front doors, which, I suppose, was the company's way of saving a few bucks in the presentation. I would like to install some speakers in the rear deck and be able to use the dedicated rear fader from the radio. However, pulling the unit provides no clue whatsoever as to the wires that the rears should be attached to. Calls to the dealer, who is usually pretty good about these things, got me nowhere. It seens that the schematic for that radio isn't around anymore. Query: Does anyone know which color wires are the rear left, rear right and rear ground (if any) on that particular unit? Has anyone done the hookup? I can't help but think that there is an open harness lurking in there somewhere that I missed. Any clue would be appreciated!