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CIRCUIT OPERATIONCircuit X53 is the feed for the left front speaker to the power Amplifier. Circuit X55 is the return from the amplifier to the radio.
Circuit X54 is the feed for the right front speaker to the power amplifier. Circuit X55 is the return from the amplifier to the radio.
Circuit X51 is the feed for the left rear speaker from the radio. Circuit X57 is the return from the speaker to the radio.
Circuit X52 is the feed for the right rear speaker from the radio. Circuit X58 is the return from the speaker to the radio.
Circuits X84 and X86 supply power and ground for the right front instrument panel speaker.
Circuits X83 and X81 supply power and ground for the left front instrument panel speaker.
Circuits X87 and X85 supply power and ground for the left front door speaker.
Circuits X82 and X80 supply power and ground for the right front door speaker.