Cooling System Connector End Views

Engine Coolant Level Switch Terminal Identification

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		7223-9721-30 2-Way Female (BK)
Pin	Wire Color	Circuit No.	Function
A	GN	68	Low Coolant Level Indicator Control
B	BK/RD	450	Ground

Engine Coolant Temperature (ECT) Sensor Terminal Identification

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		7223-9569-30 2-Way Female (BK)
Pin	Wire Color	Circuit No.	Function
A	GY/BK	2761	ECT Sensor Low Reference
B	YE	410	ECT Sensor Signal

Cooling Fan Terminal Identification - Large

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		7123-6234-40 3-Way Female (GY)
Pin	Wire Color	Circuit No.	Function
A	OG/BU	742	Battery Positive Voltage
B	OG/YE	409	Cooling Fan Motor Supply Voltage
C	BU/YE	532	Cooling Fan Low Reference

Cooling Fan Terminal Identification - Small

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		7123-6234-40 3-Way Female (GY)
Pin	Wire Color	Circuit No.	Function
A	OG/BK	842	Battery Positive Voltage
B	OG/YE	409	Cooling Fan Motor Supply Voltage
C	BU/YE	532	Cooling Fan Low Reference