I have been doing some research on the components I will need to tie an aftermarket navigation system (more specifically, a carPC) into the factory headunit on an 06 G35 6MT Coupe with the premium package. For the 05, the options look fairly straight forward: PAC Audio AAI-NIS to connect to the Sat/Aux audio inputs on the headunit and the SWI-X to support the steering wheel controls. Since the 06 premium audio package introduces Bluetooth support, and this appears to be integrated with the headunit, it is unclear if the Sat/Aux inputs are still available (I won't be getting a Sat radio)
I don't have the car as of yet to investigate this myself, but would prefer to know before I start tearing open the console after I pick it up from the dealership.
Any suggestions would be much appreciated.