Section 40 (Audio System (Service Information)): Amplifier: Operation
WARNING: This page is about a different car, the 2006 Dodge Magnum, 2006 Dodge Charger, and 2006 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.
The amplifier receives fused battery current from a fuse in the rear Power Distribution Center (PDC) at all times. The internal circuitry of the amplifier switches the amplifier ON based upon a CAN bus message that is received from the radio receiver whenever the radio is turned on. The amplifier receives the sound signal inputs from the left and right rear outputs of the radio, then sends the amplified speaker outputs for each of those channels to the speakers.