Overhead Console Connector End View

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12186451 18 Way F (NAT)
Pin	Wire Color	Circuit No.	Function
1	ORN/BLK	144	Sunroof Switch Open Vent Signal (w/CF5)
2	DK BLU	128	Sunroof Switch Low Reference (w/CF5)
3	PNK	2075	Sunroof Switch Close Vent Signal (w/CF5)
4	-	-	Not Used
5	BRN	100	Sunroof Switch Open Signal (w/CF5)
6	-	-	Not Used
7	GRY/BLK	1598	Interior Lamp Switch Off Signal
8	PNK/BLK	1597	Interior Lamp Switch On Signal
9	-	-	Not Used
10	DK BLU/ WHT	149	Courtesy Lamp Supply Voltage
11	-	-	Not Used
12	BLK/WHT	851	Ground
13	BRN/WHT	253	Trunk Release Relay Control
14	DK GRN	2074	Sunroof Switch Express Signal (w/CF5)
15	ORN	110	Sunroof Switch Close Signal (w/CF5)
16	BLK/WHT	851	Ground
17	BLK	850	Ground
18	GRY	157	Interior Lamp Control