Windshield Header Courtesy/Reading Lamps 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	PPL	328	Interior Lamp Switch Signal
B	BLK	650	Ground
C	GRY/BLK	690	Courtesy Lamps Low Control