See if the 9 pin wires are somethin like the following:

Pin 7: Pink - Radio On signal
Pin 8: Grey - Instrument Panel Lights (Dimmer)
Pin 9: Bare - (Drain wire)
Pin 10: Some Color - Right Audio
Pin 11: Brown/White - Left Audio
Pin 12: Some Color - Neg Audio
Pin 13: Black - Ground
Pin 14: Dark Green - Serial Circuit
Pin 15: Orange - Battery Voltage (Constant)