7-Foot Custom Wiring Extension Harnesses (20-26 Silverado 3500 HD)

Heavy-Duty Wiring Solution. The 7-foot custom wiring extension harness provides a reliable method to add 4-way flat and 7-way RV blade connectors directly to the truck bed while maintaining the rear socket's functionality. This setup is essential for owners who frequently switch between conventional trailer hitches and specialized 5th wheel or gooseneck hitches, ensuring seamless electrical connectivity for trailer lighting and auxiliary power.

Durable Design And Protection. Constructed with high-quality materials, the harness features a slit loom on the wires for containment and protection, and spring-loaded dust covers on the connectors to guard against dirt and debris. The black finish offers a discreet and professional appearance in the truck bed environment.

Installation Considerations. Installation is straightforward with a plug-and-play design that eliminates cutting or splicing. A factory cutout in the truck bed is required to route and mount the extension harness properly, ensuring a clean and secure fit.

Warranty Coverage. This product comes with a one-year limited warranty for added confidence.

Vehicle Compatibility. Designed specifically to fit 2020 through 2026 Silverado 3500 HD models.

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