I have spent the last 2 days searching for a write up on this and have yet to find ANYTHING helpful that doesn't take me to a dead website so here I am. I can get power to COMAND but I don't get any audio. I have tried supplying power to the amps "switch on" wire and I still don't get anything. It shocks me that in 17 years no one's had this issue while retrofitting comand. Anyways tia.