Just put an XM radio in a 2007 Chevrolet Uplander with RAP. (Retained Accessory Power)

Wanted the XM to stay powered up with the radio, but 2000 up GM vehicles don't have switched power at the radio, the radio is turned off by a digital signal when it times out, or a door is opened. Connecting to an accessory feed would turn off with the key, not RAP. The power windows also operate with RAP, so I powered the XM from the power window circuit. This is a yellow 12 or 14 gauge wire above / behind the passenger kick panel in the harness that goes to the passenger door.