Thanks for a heads up on the Delphi. I'm gonna go ahead and look into that.

But yes, about your comments about reverse engineering one of those busses, I think it would be pretty sweet to convert the empeg into the XM Radio controller and use a 3rd party XM Receiver (Ie the Pioneer, etc) so you could have all of the XM on the empeg. Of course, that would take a lovely user app that prolly wouldn't be easy to make. I'm sure the reverse engineering of the bus wouldn't take very long at all, and I'm sure some things already exist for them.