The 2008 Nissan Altima L32 series audio system consists of the following components: Audio Unit, Window Antenna, Steering Wheel Audio Control Switches, Front Door Speakers, Tweeters, and Rear Speakers. When the audio system is on, radio signals are received by the window antenna. The audio unit then sends audio signals to the front door speakers, tweeters and rear speakers.
The satellite radio system consists of the following components: Roof Antenna (satellite) and Satellite Radio Tuner. When the satellite radio system is on, radio signals are supplied to the satellite radio tuner from the satellite antenna. The satellite radio tuner then sends audio signals to the audio unit.
Below schematic illustrates the 2008 Nissan Altima Base Audio and Satellite Radio System Wiring Schematic.