I figured out how to ge the Sat to work on 03 murano without the pre wiring, the dealer did not even relize it... Because the car was not factory wired, the service manual reads that you cant use the factory sat feature. But you can with a harness for a 6-disc trunk changer and the SAT tuner for a Murano. The cd changer cord plugs in the back of the murano radio and the tuner unit and it functions perfectly.