Installing a new stereo. I am trying to install a ''JVC KD-R210'' in my wifes 1985 BMW 535i, replacing a Sony CDX-R79 and in the trunk is a Pioneer 12 disc cd changer that was hooked up to the system. This system is also hooked up to a couple of crossovers(?) and possibly an amp that I can not find, their are 2 sets of RCA jacks(male) marked for front and rear speakers. The questions are is their an adapter I can use to install the JVC using the RCA jacks? Can I hook up the CD changer to this unit? If not, then can I bypass it somehow(the rear speakers seem to be going through the unit). If someone can help my wife would love it and so would I (my dinner won't be cold). ThANKS (e-mail [email protected])