For 1990-2009 cars

#### A/C Compressor Control Module

Pin | Wire Color | Function
--- | --- | ---
1 | YEL/BLK | Idle Up Control
2 | -- | Not Used
3 | BLK/BLU | Ground
4 | WHT/BLU | Evaporator Temperature Input
5 | -- | Not Used
6 | BLU/RED | Condenser Fan Relay Control
7 | PNK | Compressor Clutch Relay Control
8 | LT GRN | Ignition Voltage
9 | BLK | Ground
10 | YEL/RED | Evaporator Temperature Sensor Ground
11 | BLU | A/C Request Signal
12 | YEL/BLU | Engine Coolant Temperature (ECT) Signal

#### A/C Compressor Clutch Relay

Pin | Wire Color | Function
--- | --- | ---
1 | YEL | Relay Supply Voltage
2 | RED | Relay Switch Voltage
3 | PNK | Relay Switch Control
4 | BLK/WHT | Compressor

#### A/C Condenser Fan Relay

Pin | Wire Color | Function
--- | --- | ---
1 | YEL | Relay Supply Voltage
2 | RED | Relay Switch Voltage
3 | BLU/RED | Relay Control
4 | BLU/BLK | Condenser Fan Motor

#### Blower Speed Selector Switch

Pin | Wire Color | Function
--- | --- | ---
1 | BLK | Ignition Voltage
2 | -- | Not Used
3 | PNK | Blower Speed High
4 | RED/BLK | Blower Speed Low
5 | PNK/GRN | Blower Speed Medium 1
6 | PNK/BLU | Blower Speed Medium 2

#### Blower Motor Resistor

Pin | Wire Color | Function
--- | --- | ---
1 | PNK/GRN | Blower Speed Medium 2
2 | PNK | Blower Speed High
3 | PNK/BLU | Blower Speed Medium 1
4 | PNK/BLK | Blower Speed Low