[thebac]

I searched Alldata and found the radio wiring diagrams incomplete. They had nothing on the PDIM (they call it an Entertainment System Control Module or Multimedia Player Interface Module)

I did, however, get connector views. Hope this helps. I am used to having a changer, too (us old guys and our CDs)....so anything you figure out would be incredibly helpful.

 

[thebac]

Could simply be the difference between the Pioneer amp and the regular radio. Notice the speaker outs are changed to low level outs. I doubt the inputs are different.

 

[thebac]

I think he is. Ive noticed that happens to the "USB" on the MyLink display when I dont hook my phone up. It makes sense you'd have to tie in before the multi media module on the aux input for it to "see" the changer. Maybe have to tie the changer trigger into the lt blue wire in #2 detection wire?