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Radio/Navigation System Schematics

Fig 1: Power, Ground, and References Schematic

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Fig 2: Radio to Speakers Schematic - UW6

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Fig 3: Audio Signal Communication Schematic - U87

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Fig 4: Speakers - Front Schematic - U87

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Fig 5: Speakers - Rear Schematic - U87

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Fig 6: Satellite Radio Schematic - U2K

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Courtesy of GENERAL MOTORS CORP.