July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Steering Wheel Controls - Left C1 Connector End View

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		50-57-9404 4 Way F
Pin	Wire Color	Circuit No.	Function
1	PNK	1039	Ignition 1 Voltage
2	GRY	397	Cruise Control On Switch Signal
3	BLK	350	Ground (LH Drive)
3	BLK	450	Ground (RH Drive)
4	YEL	1491	Backlight Lamps Control