"Amplified Stereo" help!
 

I just bought a 97 probe and it has the factory CD player with the factory amp and factory sub. I cannot for some reason seem to bypass this to hook up my aftermarket equiptment. I went out and bought the wiring harness and it is still a no go. Im an not new to stereos by any means but this one has me stummped. Anyone got any suggestions on how to get by this??