I recently purchased a pioneer P3600 and installed it in my 1988 Lincoln Town Car. The radio tuner and cd player work fine, however the aux input isn't working right. I bought a cord similar to the rb10 and plugged my Creative Zen Touch mp3 player into it. However, the only way I can hear the mp3 player is if I turn the volume on the head unit all the way up. Even then I can barely hear the player. I have the volume on the player all the way up already. I tried adjusting the SLA, and that only helped a little. Also, I plugged my portable CD player into the rb10 to see if the problem was my mp3 player, and the same problem happened, so I highly doubt the problem is the player. Any suggestions would be highly appreciated.