For those who wants to play around with the Volt Gen2 Bose system here a some useful pics:
First see the *** On Tour diagram to have the full speakers wiring color code on this thread:
http://gm-volt.com/forum/showthread....&highlight=bus
And here is some more pics:
Overview. On top : the BOSE AMP. Bottom : XM radio module (black)
Other pics:
FYI : I used the rear cigarette lighter +12V as a Remote signal to power up my Alpine Amp since I probed all the wires on the Bose Amp and didn't find any ACC RAP power signal. I suspect the BOSE amp power itself via CAN bus messages. So if you use my method as a remote power signal, your amp will not power up when the door opens and you will loose the "greeting chime" since the AMP will still be off (no power to the 12V outlets until you power up the car of put it in ACC or DIAG mode).