Western 29400-7 – Plug-In Harness Kit (HB3/HB11)

The genuine Western 29400-7 Harness connects the factory headlight wiring on 2014 through 2015 GM 1500 trucks to the vehicle’s isolation module system. This adapter configuration accommodates headlamps that utilize HB3 high beams and HB11 low beams. When you hook up your plow, the harness correctly routes electrical current to the plow light towers while temporarily disabling the truck-side headlamps. This vehicle-specific engineering eliminates complex manual wire tracing under the hood.

Benefits of the Western 29400-7 Harness

This plug-and-play adapter streamlines your vehicle setup by linking into existing factory connectors. Because the molded plugs fit seamlessly with your truck’s original electrical harness, you avoid permanent splicing or modification of factory wires. The rugged insulation and protective casing shield your signal connections from heavy winter moisture, ice accumulation, and corrosive road salt. Using this correct OEM harness prevents dashboard circuit errors and helps protect sensitive truck modules from unexpected current overloads.

• Designed exclusively for 2014–2015 Chevy Silverado and GMC Sierra 1500 trucks.

• Matches factory headlight configurations equipped with HB3 and HB11 bulb types.

• Plug-and-play setup avoids permanent modifications to clean vehicle wiring.

• Weather-sealed terminal plugs prevent water intrusion and wire corrosion.

• Links directly to standard truck-side control wiring and isolation modules.

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.