Automatic Level Control (ALC) Compressor Relay Connector End View

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12110787 4-Way F Metri Pack 150 Series (GY)
Pin	Wire Color	Circuit No.	Function
30	OG	840	Battery Positive Voltage
85	BK	450	Ground
86	YE	321	Automatic Level Control Relay Coil Supply Voltage
87	OG	1240	Battery Positive Voltage