Rockford Fosgate RFX-8340 CD Player "1999 saturn sc2 manual" Questions

1999 saturn sc2 and it had this radio in it. I want to hook up a cd changer to it and what to know how it is done. you either have to buy a Rockford CD changer and it will directly connect, or buy any

...1999 Saturn SC2, i purchased the GM wiring harness, and antenna adapter, wired all the proper colours together, and when i turned on the stereo, nothing happened. i can insert and eject a cd and push ...