Minor update - finally set aside some time to put together a breakout board for this bluetooth module. If you can't tell from the dime - these traces are insanely small. Took me the better part of a whole evening to solder on the 30ga wires you see (and keep re-counting traces to make sure I put them in the right places).
Next I'll probably try to set up some basic comm's and make sure I can control it & connect to it via BT w/my phone or something. Maybe I can do that this weekend.
Then I'll probably hop back to the radio & try starting up the radio with only my board connected - spoofing it into thinking a CD changer is there. Speaking of the CD changer - anyone know of a source where I can get a 05/06 MP3 radio? (I think the pn's are P201-UE & P203-UE) I think I bricked my '08 MP3 radio, but I don't think I could have used it anyway.