Blower Motor Resistor Assembly Connector End View

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12129566 4-Way F Metri-Pack 280 Series Sealed (GY)
Pin	Wire Color	Circuit No.	Function
A	TN	63	Blower Motor Medium 1 Control
B	L- BU	72	Blower Motor Medium 1 Control
C	OG	52	Blower Motor Supply Voltage
D	YE	60	Low Blower Motor Control