Connector A
* Pin 1: Ground
* Pin 2: Left Front Speaker (+)
* Pin 3: Left Front Speaker (-)
* Pin 4: Right Front Speaker (+)
* Pin 5: Right Front Speaker (-)
* Pin 6: Left Rear Speaker (+)
* Pin 7: Left Rear Speaker (-)
* Pin 8: Right Rear Speaker (+)
* Pin 9: Right Rear Speaker (-)
* Pin 10: Antenna
* Pin 11: Illumination
* Pin 12: Battery
Connector B
* Pin 1: CD Changer Control
* Pin 2: CD Changer Audio Input
* Pin 3: CD Changer Audio Output
* Pin 4: Remote Turn-On
* Pin 5: Speed Sense
* Pin 6: Not used
* Pin 7: Not used
* Pin 8: Not used
* Pin 9: Not used
* Pin 10: Not used
* Pin 11: Not used
* Pin 12: Not used
Connector C
* Pin 1: Not used
* Pin 2: Not used
* Pin 3: Not used
* Pin 4: Not used
* Pin 5: Not used
* Pin 6: Not used
* Pin 7: Not used
* Pin 8: Not used
* Pin 9: Not used
* Pin 10: Not used
* Pin 11: Not used
* Pin 12: Not used