Radio fuse 2002???

[rmcbri01]

I've got a quick and dumb question....

Can someone tell me which fuse on the '02 Mountaineer is "linked" to the ignition (i.e. the radio)? I've got a Sirius satellite radio that I would like to tap into a fuse that would make it power on and off with my ignition. I've gone over the manual and played with a bunch of the fuses in the past and could never find one that accomplish the task. Right now I've got it tapped into a fuse that is always hot - so I have to remember to power off the Sirius radio when I leave the vehicle.

Thanks for the help.