Originally Posted by whatevrworks
I have a limited with 730n and sirius I only have one antennae and both work fine, are you sure there is two antennae?
I'll try to get a photo off the dealer lot and confirm the equipment. From this thread input above, seems like the 730 has the head unit with built in antennae, no external required.
edit: In the 2011 JGC brochure, the section describing the commandview roof has a birds eye view of a gold rig with the deck of cards antennae, though no am/fm antennae show up in any other photos. I'm guessing earliest build models used it, and perhaps later versions use the in dash or on dash method described in below posts.