Automatic Level Control (ALC) Inflator Air Switch Connector End View

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12089248 4-Way F Metri Pack 150 Series (NAT)
Pin	Wire Color	Circuit No.	Function
A	OG	840	Battery Positive Voltage
B	-	-	Not Used
C	L- BU	1770	Ride Control Serial Data
D	WH	1245	Automatic Level Control Inflation Timer Relay Coil Control