I just bought a car with a pinoeer DEHP3500 stereo. I attached the IP Bus to RCA cable to play my iPod, but I can't get the head unit to switch to auxiliary. The manual says to press the function key until AUX is displayed, but it never comes up. Any help would be great!
You need to turn it off and then hold the function button until the clock appears. Press function a few more times until it says something like AUX: OFF and hit up to turn it on. Thats what I had to do with my p3600.