CURT 4-Way/4-Pin Trailer Wiring Harness — Vehicle-Side T-Connector for Grand Cherokee L, Plug-and-Play No-Cut

CURT 56473 is a vehicle-specific, plug-and-play 4-way flat trailer wiring harness designed to add a reliable trailer connector to compatible Jeep Grand Cherokee and Grand Cherokee L models without cutting or splicing.

If your Jeep didn’t come pre-wired for towing, this CURT T-connector installs quickly by plugging into the factory tail light sockets and provides a standard 4-way flat output for tail lights, turn signals and brake lights. The harness includes a vehicle-side connector set and a dust cover, plus built-in converter electronics that make the Jeep-to-trailer signal compatible. Engineered with surface-mount technology (SMT) circuitry and OEM-style connectors, it gives a durable, corrosion-resistant connection that keeps your trailer lighting legal and dependable on the road.

How does the CURT 56473 attach to my Grand Cherokee?

Installation is simple: the harness uses vehicle-specific plugs that mate with your Jeep's rear lamp connectors, so no cutting, splicing, or soldering is required. The routed wire harness tucks out of sight and secures near the hitch for a clean, factory-like appearance.

• Direct-fit OEM-compatible plugs for taillight assemblies
• Pre-terminated 4-way flat socket mounts near hitch
• Includes dust cover to protect connector when unused
• Basic hand tools and vehicle panel access typically all that’s needed

What lighting functions will the harness provide to my trailer?

This 4-way flat harness transmits the vehicle's running lights, left and right turn signals, and brake lights to your trailer. Because it features a built-in tail light converter, it translates the Jeep's lighting outputs into the correct trailer signals without altering your factory wiring.

• Running/marker light circuit for visibility
• Separate left and right turn signal circuits
• Brake light circuit synchronized with vehicle brakes
• Converter circuitry prevents bulb feedback or fault issues

Will this harness fit my specific model year Grand Cherokee?

CURT 56473 is made for select model years and configurations of the Jeep Grand Cherokee and Grand Cherokee L; fitment depends on the vehicle’s factory wiring and taillight connector style. Always confirm compatibility using the vehicle application guide or by checking connector type before purchase.

• Vehicle-specific fitment—verify year and model compatibility
• Fits models with factory taillight connector style matching the harness
• No universal modifications needed when properly matched
• Reference CURT application information or dealer fit guide

What durability features protect the harness from road conditions?

The 56473 harness is built with SMT circuitry and quality materials to resist vibration and moisture commonly encountered behind the bumper. The connector housing and included dust cap keep terminals clean, while the wiring insulation stands up to heat and abrasion from normal towing use.

• Surface-mount technology (SMT) for reliable electronics performance
• Weather-resistant connector housing with dust cover included
• Insulated wiring routed to minimize chafing and exposure
• Designed for long-term towing use with corrosion-resistant contacts

Who is this for: Drivers of compatible Jeep Grand Cherokee and Grand Cherokee L models who need a fast, non-invasive way to add trailer lights. If you prefer a clean, factory-style installation without cutting into your vehicle’s wiring and want a dependable 4-way flat connector for trailers, small boats, or cargo carriers, the CURT 56473 is designed to fit those needs. Verify compatibility for your model year, gather a few simple tools, and you’ll have a secure trailer wiring connection that keeps your lights functioning and your tow setup street-legal.