The genuine Western 69818-2 Harness connects your vehicle’s factory lighting directly to your snow plow’s electrical system. This specific adapter handles the power distribution for GM trucks utilizing HB3, H11, or HIR2 headlamps. Consequently, it automatically shifts illumination from your truck to the plow blade when you attach the equipment. Additionally, this updated version features sealed, built-in relays to prevent your factory low beams from overheating during extreme plowing operations.
Benefits of the Western 69818-2 Harness
Replacing a damaged or outdated harness restores consistent, flicker-free performance to your nighttime lighting. Because of the exact OEM fitment, you avoid permanently cutting or splicing into clean factory wires. Furthermore, heavy-duty molded connectors shield your vital electrical contacts from corrosive road salt and severe winter moisture. As a result, you maintain complete visibility and road safety while clearing dark commercial lots.
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Connects GM HB3, H11, or HIR2 vehicle headlamps to the standard 3-port module system.
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Features newly integrated, weather-sealed relays to protect factory headlight circuits.
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Direct replacement and upgrade for the older generation 69818 and 69818-1 adapters.
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Eliminates the need for permanent custom wiring modifications.
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Requires a compatible 3-port isolation module (sold separately).
Additional Info and Common Related Parts
| Part Number | Item Name | Technical Role |
| 29070-1 | 3-Port Isolation Module | Directs electrical lighting signals between the vehicle and the plow. |
| 69793-1 | 11-Pin Light Harness | Works alongside this kit to complete the truck-side lighting integration. |
| 49326 | Dielectric Grease | Seals and protects electrical terminal connections from moisture corrosion. |
| 61548K | Plug Cover Kit | Protects electrical grille connectors from moisture when the plow is detached. |
Always refer to your Western Plow’s documentation and vehicle-specific installation instructions to confirm compatibility and proper installation procedures.
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