sat radio pin guide?
Anyone know where I can find a guide showing what the dozen or so pins on the sat wiring harness/connector do? I'd like to see if there's a way to have both XM and Sirius wired into the system, and switch between the two via a relay or switch.
Basically, they would both need to remain powered at all times, but then the relay would switch over the bus and audio connections.
Any ideas?
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