Trying to connect my satellite radio.. does this plug work in 2004 Volvo xc90 and WHERE does it connect in back of radio??

Sadly, that's a common problem.
You can pull the fuse to the radio and wait a few minutes, then plug it back in. It'll reset the radio and it MIGHT eject the CDs. If that doesn't work, you have to go to the dealership.
They can sometimes pull the CDs out, and sometimes not, and they have to ship the radio off.

The fuse should be #5 located in the box in front of your legs where the safety light is located.

sounds like a loos econnection remove radio and check the wire connectors are pushed fully home also check the fuse in the back of radio as you have it removed,try the radio function before refitting it just incase it still does'nt play as you can then check the power/earth connections etc

thers an issue with the convenient/assesory module--get car scanned with pro equipment not at a partsplace

Sound to me like you have blown a fuse. Anything else not working?

Antifreeze out of the exhaust would be from bad head gasket.

spray ignition with graphite

I have seen car chargers that would blow the fuse. They were shorted out so look in the fuse box and replace the accessorie fuse and retest

Could just be the socket itself. The single wire connected on the back tends to fall off on some vehicles. You can just pull out the socket.

I found one site that may be able to help you http://www.automotix.net/partshotline-volvo-xc90-cd_player_radio-requests.html
Or Try converting a new radio dirrect to the fuse boxs the old fashion way, I hope this was helful good luck!

replace the ignition lock cylinder