CURT 56003

There is nothing like the luxury and power that go along with heavy-duty towing. 5th wheel RVs offer a deluxe, home-away-from-home experience unlike any other, while gooseneck trailers possess a strength that far surpasses most other trailer options. As with any trailer, however, 5th wheels and goosenecks must be equipped with the proper lighting and electrical systems, and tend to require even more complex connectors than a standard receiver-type trailer setup. Make things simple with a CURT 5th wheel / gooseneck extension harness. These wiring harnesses are designed to put an extra connector socket in the bed of your pickup truck while still retaining power to the rear connector socket mounted on your bumper. This is done by plugging into the back of the existing original equipment (OEM) harness and routing through the body of the truck to a hole in the truck bed, providing a connector that is ready to accommodate your 5th wheel or gooseneck trailer.

This CURT extension harness provides connection points for both 4-way flat and 7-way RV blade connectors, and it comes in a length of 7'. It is compatible with select models of Chevrolet, Dodge, Ford, GMC, Nissan, Ram and Toyota (to verify your vehicle compatibility, see the CURT application guide at curtmfg.com). When you need a towing electrical solution that allows you to switch back and forth between your receiver hitch and specialized trailer hitch, CURT gets you plugged in

• 7' Custom Wiring Extension Harness (Adds 4-Way, 7-Way RV Blade to Truck Bed)
• 7' extension with right-angle plug for easy installation
• Spring-loaded dust covers keep connectors clean when not in use
• Slit loom keeps wires contained and well protected
• Factory cutout in truck bed required for installation
• Routes a dual-output socket into truck bed while retaining use of rear socket
• Provides standard 4-way flat and 7-way RV blade
• Simple plug-and-play design eliminates the need for cutting or splicing
• Allows for easy connection of 5th wheel or gooseneck wiring
• 4-way flat output connects tail lights, brake lights and turn signals
• 7-way connects tail, brake, reverse, turn signals, brakes and auxiliary power

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Application Summary

Year	Make / Model
2019-2026	Chevrolet Silverado 1500
2022	Chevrolet Silverado 1500 LTD
2020-2026	Chevrolet Silverado 2500 HD
2020-2026	Chevrolet Silverado 3500 HD
2019-2026	GMC Sierra 1500
2022	GMC Sierra 1500 Limited
2020-2026	GMC Sierra 2500 HD
2020-2026	GMC Sierra 3500 HD