Part C 
Pin 1: ground CDC (cd-changer) 
Pin 2: data CAN low CDC 
Pin 3: + battery CDC 
Pin 4: audio right CDC 
Pin 5: not used 
Pin 6: not used 
Pin 7: data CAN high 
Pin 8: audio ground CDC 
Pin 9: not used 
Pin 10: audio left CDC 
Pin 11: not used 
Pin 12: not used