The genuine Western 73973-1 Harness connects your Ford truck side lighting to the central isolation module. This vehicle-specific adapter handles electrical signals on 2017 through 2019 Ford Super Duty halogen models. Consequently, it allows your front lights to toggle cleanly between the truck and the plow towers. Using an authentic factory kit prevents unexpected dashboard warnings. Additionally, it protects sensitive vehicle electronics from unexpected module failures.
This truck side layout utilizes an 11-pin connector block that interfaces directly into the vehicle harness. Because of this plug-and-play style, technicians no longer need to cut or splice factory wires. Furthermore, the premium weather-sealed connectors form a tight seal against external moisture and winter salt spray. Therefore, your front plow light towers remain completely active through demanding commercial winter clearing shifts.
Benefits of the Western 73973-1 Harness Kit
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Engineered exclusively as a direct fit for 2017 through 2019 Ford Super Duty F-250 through F-550 trucks.
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Designed to work seamlessly with factory quad halogen H13 headlight configurations.
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Pairs directly with standard truck side 3-port isolation modules for smooth signal switching.
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True plug-and-play setup avoids messy splicing or tapping to preserve your factory warranty.
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Does not accommodate vehicles equipped with factory premium LED lighting setups.
Additional Info and Common Related Parts
| Part Number | Item Name | Technical Role |
| 29070-1 | 3-Port Isolation Module | Directs lighting and switching current layout between the vehicle and plow. |
| 73970 | Halogen Vehicle Harness | Acts as the primary 11-pin truck-side main lighting connection cable. |
| 49326 | Dielectric Grease | Seals and shields multi-pin terminal contacts from freezing sub-zero moisture. |
| 61548k | Plug Cover Kit | Protects electrical grille connectors from winter road salt when the blade is unhooked. |
Always refer to your Western Plow’s documentation and vehicle-specific installation instructions to confirm compatibility and proper installation procedures.
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