Ok, I own a 1993 red Grand Prix LE 4dr. I got a Crutchfield manual and it clearly describes how to get the console and everything apart. Now, I have a bit of a problem. I don't want get rid of the original stereo(AM/FM/cassette deck) but I also want to add a Rio Car (Empeg) which is unamplified and contains no radio tuner. I know exactly where to mount it, but my problem is how do I wire it up to my audio system? The stereo has no audio inputs. Plus the old stereo's output is amplified and It has no preamp outputs. I would basically like to have the rio, but at the same time leave the original stereo in and be functional. Can someone please help me figure this out.