For 1990-2009 cars

Connector 1: | Engine Oil Pressure (EOP) Switch
Connector 2: | Instrument Panel Cluster (IPC)
Connector 3: | Outside Air Temperature Sensor

### Engine Oil Pressure (EOP) Switch

#### Connector Part Information

- OEM: 15474881
- Description: 4-Way F Metri-Pack 150 Series Sealed (GY)

#### Engine Oil Pressure (EOP) Switch

Pin | Wire Color | Circuit No. | Function
--- | --- | --- | ---
A | 0.5 TN/BK | 231 | Oil Pressure Switch Signal
B-D | -- | -- | Not Available

### Instrument Panel Cluster (IPC)

#### Connector Part Information

- OEM: 15429805
- Description: 16-Way F (NA)

#### Instrument Panel Cluster (IPC)

Pin | Wire Color | Circuit No. | Function
--- | --- | --- | ---
1-4 | -- | -- | Not Used
5 | 0.35 D-GN/WH | 1358 | DIC Switch Signal
6 | 0.35 BN/WH | 419 | MIL Control
7 | -- | -- | Not Used
8 | 0.35 GY | 8 | Instrument Panel Lamp Supply Voltage
9 | 0.35 D-GN/BK | 5060 | Low Speed GMLAN Serial Data
10 | -- | -- | Not Used
11 | 0.35 PK | 339 | Ignition 1 Voltage
12 | -- | -- | Not Used
13 | 0.35 RD/WH | 1440 | Battery Positive Voltage
14 | 0.35 D-GN | 264 | Security Indicator Supply Voltage
15 | 0.5 BK/WH | 1150 | Ground
16 | 0.35 BK | 550 | Ground

### Outside Air Temperature Sensor

#### Connector Part Information

- OEM: 12052642
- Description: 2-Way F Metri-Pack 150 Series, Sealed (L-GN)

#### Outside Air Temperature Sensor

Pin | Wire Color | Circuit No. | Function
--- | --- | --- | ---
A | 0.35 D-GN/WH | 636 | Ambient Air Temperature Signal
B | 0.35 YE | 61 | Low Reference