Radio Connector End View

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12110088 24-Way F Micro-Pack 100 Series (GY)
Pin	Wire Color	Circuit No.	Function
A1-A2	-	-	Not Used
A3	OG	360	Amplifier Control
A4-A7	-	-	Not Used
A8	BN	199	Left Rear Speaker Output (+)
A9	YE	116	Left Rear Speaker Output (-)
A10	D-GN	117	Right Front Speaker Output (-)
A11	L-GN	200	Right Front Speaker Output (+)
A12	BK	550	Ground
B1	OG	440	Battery Positive Voltage
B2	YE	43	Accessory Voltage
B3	-	-	Not Used
B4	GY	8	Instrument Panel Lamp Supply Voltage
B5	-	-	Not Used
B6	OG	1950	Amplifier Present Signal
B7	-	-	Not Used
B8	TN	201	Left Front Speaker Output (+)
B9	GY	118	Left Front Speaker Output (-)
B10	L-BU	115	Right Rear Speaker Output (-)
B11	D-BU	46	Right Rear Speaker Output (+)
B12	BN	9	Park Lamp Supply Voltage