For 1990-2009 cars

Table 1: | Automatic Transmission Engine Brake Switch
Table 2: | Engine Brake Actuator Control Valve
Table 3: | Engine Brake Relay
Table 4: | Exhaust Brake Switch

#### Automatic Transmission Engine Brake Switch

Connector Part Information |

• | 12052641

• | 2 Way F, Metri-Pack 150 Series, Sealed (BLK)

Pin | Wire Color | Circuit No. | Function
--- | --- | --- | ---
A | BLK | 650 | Ground
B | BLK | 650 | Ground

#### Engine Brake Actuator Control Valve

Connector Part Information |

• | 15300027

• | 2 Way F Metri-Pack 280 Series (BLK)

Pin | Wire Color | Circuit No. | Function
--- | --- | --- | ---
A | BLK/WHT | 1962 | Engine Brake Solenoid Feed
B | BLK | 650 | Ground

#### Engine Brake Relay

Connector Part Information |

• | 12110539

• | 5 Way F Metri-Pack 280 Series, Sealed (BLK)

Pin | Wire Color | Circuit No. | Function
--- | --- | --- | ---
30 | PPL | 1146 | Engine Brake Enable Signal
85 | PPL | 1146 | Engine Brake Enable Signal
86 | DK GRN | 901 | Exhaust Brake Enable (MTW/MX4)
86 | PNK | 1905 | Retarder Disable Control (All Others)
87 | -- | -- | Not Used
87A | BLK/WHT | 1962 | Engine Brake Solenoid Feed

#### Exhaust Brake Switch

Connector Part Information |

• | 12047786

• | 4 Way F Metri-Pack 150 Series (BLK)

Pin | Wire Color | Circuit No. | Function
--- | --- | --- | ---
A | WHT | 1961 | Engine Brake Switch Output
B | PPL | 1146 | Engine Brake Enable Signal
C | BLK/WHT | 1962 | Engine Brake Solenoid Feed
D | BLK | 250 | Ground