Premium II
Two wires connected to each speaker, one feed circuit (+) and one return circuit (-), allow the audio output signal electrical current from the appropriate channel of the audio power amplifier to flow through the speaker voice coil or coils (subwoofer). The graphic above shows the mapping of the amplifier channels to the speakers and subwoofer. However, it should be noted that channel 10 of the 12 channel amplifier is unused.
The hard wired circuits between the audio power amplifier and the speakers or subwoofer, or between the Radio Receiver Module (RRM) (also known as the radio or the head unit) and the amplifier may be diagnosed using conventional diagnostic tools and procedures. Refer to the appropriate wiring information. The wiring information includes wiring diagrams, proper wire and connector repair procedures, details of wire harness routing and retention, connector pin out information and location views for the various wire harness connectors, splices and grounds.