Custom Aux wiring to 10-pin 2005 radio harness

[dennypt]

Hello PT people,

I've been searching around , to no avail, trying to find some description
for the input pins on the radio. I'd like to put my own Auxiliary input to the
radio for my mp3 player. I've found many manufactured devices to do the
job:

USA Spec
Soundgate SDSCR2 2002-2005 Chrysler Dual Auxiliary Input Converter
ebay

But these start at $69.

I feel that the wiring is probably simple. Some line level stereo inputs and
maybe a control line which would usually be controlled by the external
factory cd changer, or the sat radio.

If I could find a diagram for the 10-pin harness, I could wire up my own
Aux input.

I'm sure somebody must have done this already. It would be great if someone
could point me in the right direction to a diagram or a diy site.