I don't believe the comment about the ID being in the antenna!
Believe it.......I found that one out the hard way. I have the XM antenna hard wired on my SEEG and thought it was just a matter of buying anther antenna to use the same XM/GPS in my truck or car. The GPS works but the XM didn't so I called XM. They kept telling me that they sent a signal and that if it's installed correctly, that I should be receiving the signal. (I had explained that it was the same radio and that it was just a new antenna). She told me that the radio was receiving the signal and that there must be somethig wrong with my radio.
So we switched it back to the bike and it worked fine. Two hours into this, Terrie suggests that I give them the number off of the back of the antenna and wah-lahhhh it now works in the truck. I told the lady "that's not a radio ID number, that's an antenna ID number". She said "no, that's a radio ID number......as far as I know, the antennas are not numbered". But we learned through experience, that they are.
I don't want to pay for a third radio so I have an antenna for sale if somebody needs one. Used just for a couple of minutes.
Believe it or not, that's my experience..........