Ok, I'm going to finish my XM install tomorrow, and had some questions about wiring.

The kit I have includes an adaptor to wire the radio right into a power source, as opposed to using up the power socket. It has been slightly annoying to have to remember to power off the XM every time I finish driving, so ideally I would like to hook into a power source that is only on when acc/ign is on.

Anyone know of a good place to splice in?

Thanks in advance.

I'd say use the yellow wire going to the factory radio. It'* a switched source that will also work with the retained accessory power.

Yellow wire, got it...

I'll be back with pics later :P