The GM12LAN-AUX/S adapter, when used with the appropriate vehicle harness (sold separately) provides an RCA auxiliary input that is accessed through the satellite radio controls of the factory radio. The GM12LAN-AUX/S is compatible with both Class II and 29 bit LAN vehicles that have satellite radio capability, and will maintain factory satellite, if present. The GM12LAN-AUX/S also provides a +12 volt accessory output that follows the R.A.P. (retained accessory power) of the vehicle.
The GM12LAN-AUX/S will require one of the following harnesses, depending on vehicle type and whether the vehicle is XM-equipped:






