Hi Newboy. Yes, it does. The cables from the sat nav mount go down to a plug and junction box above the right hand radiator. I'm not sure what the plus for as no cables come out of it?
Yes its the same unit, but I believe the cradle it fits into is different. The normal Garmin cradle (a 660 ) is a small one without the surround that the BMW nav has. Incidentally, the Garmin 660 mount has a wiring loom to which you attach a CAB 66 cable which plugs into the Starcom.
PS since its a new bike , has it got the twiddly wheel thing on the left handlebar ?. If so , I don't know if you can get a Garmin to provide audio as BMW has configured its nav system differently to a standard Zumo.