I read that the CX-5 has in effect, a local area network with several computer control units, all connected via a twisted pair. The rear view camera and the rear lighting is all connected to a rear control module and the data is transfered to the video display via the computer control twisted pair. This design greately reduces wiring and weight so there is no video-in line to the video unit and the rear control unit turns lights on as dictated by the central cpu without wiring back to the light switches and turn signals and brake switches etc. It also consolidates the data from the Blind Spot monitoring and rear parking sensors and puts it on the network so the front control unit can turn on the lights in the rear view mirrors and buzzer as needed.