A communication system for a vehicle includes an interior assembly and an in-vehicle communication control that is located in the vehicle remote from the interior assembly. A wired connective link electrically connects the interior assembly and the in-vehicle communication control. A human-machine interface is located at the interior assembly and is connected to the in-vehicle communication control via the connective link to communicate at least one human-machine interface signal between the human-machine interface and the in-vehicle communication control. A gobal positioning system control in the vehicle communicates at least one GPS-dervied signal to one of the interior assembly and the in-vehicle communication control via the connective link and the at least one human-machine interface signal and the at least one GSP-derived signal share the connective link such that the connective link comprises a shared common connective link between the in-vehicle communication control and the interior assembly.