Do not install the kits listed below on 2003 model year Dodge trucks built up to June 27th 2005 with automatic transmissions without a transmission controller. Pacbrake has kits for these vehicles that include an automatic transmission controller.

C44031 Pacbrake kit is a PRXB design for 2003 model year and newer Dodge trucks built up to January 4th 2004 with a Cummins 5.9L and manual shift transmission only.
C44037 Pacbrake kit is a PRXB design for Dodge trucks built after January 5th, 2004 and newer with Cummins 5.9L diesel engines and a manual shift transmission. This kit also fits on Dodge trucks built after June 27th, 2005 with Cummins 5.9L 610 ft-lbs of torque and automatic transmissions, transmission controller is not required on trucks built after June 27th, 2005.
Pacbrake PRXB exhaust brakes require a minimum of 100PSI to fully close the butterfly valve, ensure your pressure switch will maintain pressure above 100PSI. Before starting the installation, please read the entire installation manual carefully. Check that your PACBRAKE kit contains all the necessary parts. Pacbrake offers three optional accessories to enhance your exhaust brake system that you may want to consider before starting the installation.

Dash Switch Installation
Consult with the owner or operator of the vehicle for their preference of dash switch location. The location shown in the photo is our recommendation for a vehicle equipped with an automatic transmission. Vehicles with manual transmissions, we recommend an optional shift lever mounted on/off switch (C18042). Once the switch location has been chosen, if a dash switch is being installed, drill a 1/2″ hole to accommodate the toggle switch. Connect the white wire to the top terminal and the black wire to the bottom terminal. Connect the other end to a good chassis ground. The white wire is connected later. If installing a shift lever mounted on/off switch, follow the instructions provided within the C18042 kit.

Exhaust Brake Installation
INSTALLER OPTION (not mandatory) Some installers remove the front wheels and 8 screws which secure the wheelhouse splash shields. Doing this allows for easier access to the exhaust elbow and the engine ECU on the drivers side of the vehicle. To remove the wheelhouse splash shield completely, the ABS cable will need to be disconnected from the splash shield. Caution: If removing the front wheels for easier access, make sure the vehicle is supported properly.

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