I am installing an AVIC-D3X in my 06 Focus ZX4, I have the bluetooth adapter, sirius, and rear view camera. I was wondering if anyone could tell me if I need to ground the mute wire since Im going to be using the bluetooth adapter? Also, how bout hooking up the camera, is that a hard install, and can I use the same antenna for the sirius and navigation features, or do I have to use the two seperate antennas? Thanks for any help on this!