The first part of the story:
http://forums.radioreference.com/pictures-your-shack-mobile-setup/173914-2005-pontiac-grand-am.html
Since I had been using the AM/FM antenna for the scanner, the AM/FM radio didn't work, only the Sirius radio part. I tore into the factory mount and mounted my own antenna, a Larsen Tri-band 150/450/800. I used the factory hole and ran my own coax. In the dash, I have "T", one lead to the AM/FM radio and the other to the scanner.
Enjoy
Tim
http://forums.radioreference.com/pictures-your-shack-mobile-setup/173914-2005-pontiac-grand-am.html
Since I had been using the AM/FM antenna for the scanner, the AM/FM radio didn't work, only the Sirius radio part. I tore into the factory mount and mounted my own antenna, a Larsen Tri-band 150/450/800. I used the factory hole and ran my own coax. In the dash, I have "T", one lead to the AM/FM radio and the other to the scanner.
Enjoy
Tim