So you're saying the 00 radio has no audio line between the tape deck/cd player to the main tuner/amp that can be spliced?

Maybe you could. But it'* not that simple. The audio source is controlled through commands from the Class 2 Serial bus. If you could actually splice into it, how would you talk through the Class 2 Serial Bus? I suppose you could even manually deal with having more than one audio source operating at the same time, but even if it were possible... WHAT A ROYAL PITA

That $79 you mentioned sounds really cheap to me considering the void in features you're talking about (assuming it were possible). You can even get an adapter for the iPod that will allow you to control it from the head unit and steering wheel controls. I don't get why someone would tear apart the radio and risk ruining it to get a crippled version of something you could do a proven way for $100 or so. Gees! an iPod is more money than that

But hey, if you want to pave the way to do something that has so little utility - be my guest...