Western 29048 – Plug-In Harness Kit (HB3/HB4, 3-Port Module)

The genuine Western 29048 Harness connects your vehicle’s original headlight system directly to the truck-side isolation module. This complete wiring kit adapts the electrical signals on many classic Chevy and GMC trucks equipped with HB3 high beams and HB4 low beams. Consequently, it allows your front lighting system to toggle cleanly between the truck and the plow light towers. Using a vehicle-specific setup prevents diagnostic dashboard warnings and ensures reliable power distribution when operating in sub-zero winter temperatures.

This truck-side configuration combines the 11-pin vehicle light harness and individual headlamp adapters into one convenient package. Because the molded plugs match your vehicle’s original connectors, you avoid cutting clean factory wiring during installation. Rugged protective loom shields the internal copper wires against heavy winter moisture, freezing sleet, and corrosive road salt. Therefore, your plow lights remain dependable through long commercial clearing runs.

Benefits of the Western 29048 Harness

• Engineered specifically for Chevy and GMC trucks with HB3 and HB4 headlight configurations.

• Combines the 26357 11-pin vehicle harness and 28253 headlamp adapters.

• Designed exclusively to work with standard truck-side 3-port isolation modules.

• Plug-and-play connections eliminate permanent or messy factory wiring modifications.

• Heavy-duty insulation guards terminal contacts from severe weather and salt corrosion.

Additional Info and Common Related Parts

Always refer to your Western Plow’s documentation and vehicle-specific installation instructions to confirm compatibility and proper installation procedures.

Western Part # 29048 Plug-In Harness Kit (Vehicle Side) includes three essential components for a streamlined installation:

• Part # 28253 Plug-In Harness HB-3 & HB-4: This harness provides the necessary connections for vehicles equipped with HB-3 and HB-4 headlight bulb configurations, ensuring proper integration of the plow’s headlights with the vehicle’s lighting system. The plug-in design simplifies the connection process.

• Part # 26357 Vehicle Lighting Harness – 11-Pin: This 11-pin harness serves as a central interface for various lighting and control signals between the vehicle and the snow plow. It facilitates the operation of turn signals, parking lights, and other essential lighting functions of the plow.

• Part # 22381 Battery Adapters Side Terminal: These adapters are designed to provide a secure and reliable power connection to your vehicle’s battery using a side terminal configuration. This ensures the plow’s electrical system receives the necessary power for its operation.