Interface Module (Inputs)

^ Circuit 8 (terminal A6): Variable voltage input from the headlamp and I/P lamp dimmer switch when the headlamp switch is in the PARK or HEAD position. Provides voltage output to the AVM, SSA, TSA and ASA for control illumination at night.
^ Circuit 43 (terminal A8): High with ignition switch in ACC or RUN position. Bussed to provide voltage to the Rear Seat Audio (RSA) control.
^ Circuit 46 (terminal A2): Right rear channel radio audio (+) input from radio. Bussed to the Rear Seat Audio (RSA), Second Seat Audio (SSA) and Third Seat Audio (TSA).
^ Circuit 46 (terminal B2): Right rear channel radio audio (+) input from the Rear Seat Audio (RSA) control. Provides radio audio to the rear speakers when both the RSA and the AVM are off.
^ Circuit 115 (terminal A1): Right rear channel radio audio (+) input from radio. Bussed to the Rear Seat Audio (RSA), Second Seat Audio (SSA) and Third Seat Audio (TSA).
^ Circuit 115 (terminal B1): Right rear channel radio audio (-) input from the Rear Seat Audio (RSA) control. Provides radio audio to the rear speakers when both the RSA and the AVM are off.
^ Circuit 116 (terminal A3): Left rear channel radio audio (-) input from radio. Bussed to the Rear Seat Audio (RSA), Second Seat Audio (SSA) and Third Seat Audio (TSA).
^ Circuit 116 (terminal B3): Left rear channel radio audio (-) input from the Rear Seat Audio (RSA) control. Provides radio audio to the rear speakers when both the RSA and the AVM are off.
^ Circuit 199 (terminal A4): Left rear channel radio audio (+) input from radio. Bussed to the Rear Seat Audio (RSA), Second Seat Audio (SSA) and Third Seat Audio (TSA).
^ Circuit 199 (terminal B4): Left rear channel radio audio (+) input from the Rear Seat Audio (RSA) control. Provides radio audio to the rear speakers when both the RSA and the AVM are off.
^ Circuit 351 (terminal B6): Provides ground for IM and Rear Seat Audio (RSA) functions.
^ Circuit 906 (terminal B5): High with the rear seat audio mode enabled. Bussed to provide rear seat audio enabled signal to the Rear Seat Audio (RSA), Second Seat Audio (SSA) and Third Seat Audio (TSA). When high, the RSA, SSA and TSA connect the headphone jacks to the rear speaker audio radio output.