ok i got it working!i didnt have to bypass the amp or anything like that. i really made it more difficult then it needed to be. on my old factory stereo there was the wiring diagram and i double checked my wiring with it today. i found i had mixed up 2 of the wires and run the antenna to a speaker. so now my radio works, antenna goes up and down, however my deck wont play my ipod when its connected to the usb or the aux port. the visualizer works when i have it connected to the usb or aux, however the visualizer also worked on radio when i had my antenna hook up to a speaker.
any ideas? it puts out sounds on radio only. not cd, aux or usb