April 5, 2026: LEMON Manuals is launched! Read the announcement.

Cellular Communication Connector End Views

Inside Rearview Mirror Terminal Identification

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		917981-2 16-Way F AMP Multilock 040/070 Hybrid (BK)
Pin	Wire Color	Circuit Number	Function
1	-	-	Not Used
2	BARE	1705	Drain Wire
3-7	-	-	Not Used
8	BK	750	Ground
9	-	-	Not Used
10	GY	655	Cellular Microphone Signal
11	D-GN/WH	2514	Keypad Signal
12	L-GN/BK	2515	Keypad Supply Voltage
13	-	-	Not Used
14	YE/BK	2516	Keypad Green LED Signal
15	BN/WH	2517	Keypad Red LED Signal
16	-	-	Not Used

Vehicle Communication Interface Module (VCIM) Terminal Identification - C1

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		917981-1 16-Way M AMP MKII Hybrid (WH)
Pin	Wire Color	Circuit Number	Function
1	-	-	Not Used
2	BN/WH	2517	Keypad Red LED Signal
3	YE/BK	2516	Keypad Green LED Signal
4-5	-	-	Not Used
6	L-GN/BK	2515	Keypad Supply Voltage
7	-	-	Not Used
8	BK/WH	351	Ground
9-10	-	-	Not Used
11	D-GN/WH	2514	Keypad Signal
12-14	-	-	Not Used
15	OG	2340	Battery Positive Voltage
16	-	-	Not Used

Vehicle Communication Interface Module (VCIM) Terminal Identification - C2

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		917975-1 12-Way M AMP MKII Hybrid (WH)
Pin	Wire Color	Circuit Number	Function
1	OG/BK	1406	Left Audio Signal (+)
2	L-BU	1405	Audio Common Signal
3-5	-	-	Not Used
6	L-GN	2271	ADG Class 2 Serial Data
7	-	-	Not Used
8	BARE	2012	Drain Wire
9	GY	655	Cellular Microphone Signal
10	BARE	1705	Drain Wire
11-12	-	-	Not Used