I know we've discussed this a bit inside of PMs, but I wanted to post here as well, so that any solutions we come up with can be seen by others. I have a pretty detailed thread on my Challenger install here: http://www.mp3car.com/newbie/138628-...r-install.html I ended up not using any software solutions to tie into the CANBUS network, and instead I used PAC Audio hardware solutions to get both my factory amplifier to turn on and off, and to interface with the steering wheel controls.
For HD Audio I used the Directed DMHD-1000.
For backup camera: "I just hooked the Pac-Audio C2R-CHY4 green reverse camera wire directly to the Lilliput green reverse wire and it worked perfectly."
"I am using a single 4-channel amplifier to power both the subwoofer and the 6 factory Boston Acoustics speakers. My car came with the factory CAN-Bus controlled amplifier as well, so I bought a PAC-Audio C2R-CHY4 harness, which turns the factory amp on and off via CAN-Bus control messages."
"For anyone interested, I was finally able to get my steering wheel controls working today after a few false starts. What finally ended up working for me was purchasing a a Pac-Audio SWI-PS unit to plug directly into the Pac-Audio C2R-CHY4."