First, you can use a simple double-male-end wire that has the standard mini headphone sized jack on each end. Radio Shack; about $6 or so
The Aux In only works with using the FM Transmitter. So if you have your radio wired to play through the Aux Out as I do, you still need to use the FM transmitter from the satellite radio to hear your auxilary device.

Basically I leave the wire plugged in all the time and set one of my head ...

First, you can use a simple double-male-end wire that has the standard mini headphone sized jack on each end. Radio Shack; about $6 or so
The Aux In only works with using the FM Transmitter. So if you have your radio wired to play through the Aux Out as I do, you still need to use the FM transmitter from the satellite radio to hear your auxilary device.

Basically I leave the wire plugged in all the time and set one of my head unit radio presets to the FM transmitter channel and just flip to that when I want to use the iPod. It doesn't sound bad, but I do have to crank up the volume on the iPod pretty much all the way.

Here is where I finally found out the answer:

http://www.xmfan.com/viewtopic...

http://www.f150online.com/foru...

I went to Circuit City and they installed an Aux line and it's own 12v power adapter so I do not have to use the power adapter on the console, the cassett tape adapter or fool with installing the FM transceiver antenna. With an Aux line and power adapter I can hide the radio and all the hookups with a little black curtain. You can also hook up a MP3 player to the Aux line as well.
http://www.buy.com/prod/audiov...

Then there is the possibility of using an accessory called a switch box.
It is such a neat unit that lots of people want it to do a lot of things.

just take them back to the store so the people can take a look or you or one of your friends can take the power of both of them out and put them back in in like a half a hour ok well nice to help