OK, just promise never to crank the volume up more than 1/4 (or is it logrithmic?).

I took apart a CD-RB10 (connects only to head unit) and a CD-RB20 (goes between head unit and CD changer). The color codes agree. See the attached JPEG


Attachments
62073-CD-RB10 pin-out, rev 2.jpg (165 downloads)