Courtesy/Reading Lamp - Left Connector End View

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12047781 3-Way F Metri-Pack 150 Series (BLK)
Pin	Wire Color	Circuit No.	Function
A	GRY	157	Interior Lamp Control
B	BLK	1750	Ground
C	DK BLU/ WHT	149	Courtesy Lamp Supply Voltage