CURT 7-Way USCAR Replacement Wiring Harness — 24-Inch Bonded Color-Coded Wires, Vehicle-Side Female Socket

The CURT 56229 is a 7-way USCAR-style vehicle-side replacement connector harness with 24 inches of color-coded bonded wire for reliable trailer power and grounding.

If your vehicle’s original USCAR connector is cracked, corroded, or missing, the CURT 56229 replacement harness restores all seven circuits needed for towing: tail/marker lights, turn signals, brake lights, reverse lights, electric brake power, battery/aux, and ground. Built with rust-resistant black plastic and easy-to-splice, color-coded conductors, this female-end socket is intended for the vehicle side of a USCAR-type 7-pin trailer connection.

What does this harness replace and why does that matter?

This part replaces damaged or missing factory USCAR vehicle harnesses to re-establish a proper, weather-resistant trailer connection. Using the correct vehicle-side socket avoids mismatched pins and ensures each trailer circuit functions as intended while towing.

• Direct fit female USCAR 7-pin socket for vehicle side
• Restores power to all seven trailer circuits including brake and battery
• Prevents electrical faults from corroded or broken connectors

How easy is installation and wiring splicing?

CURT supplies 24 inches of bonded, color-coded wire so you can splice into your vehicle harness without pulling extra lengths. The bonded cable keeps conductors organized and reduces the risk of cross-connections during installation.

• 24" bonded wires for straightforward routing to factory harness points
• Color-coded conductors to match standard trailer wiring diagrams
• Fits retrofits with compatible CURT part numbers for weatherproof setups

Will this connector withstand road and weather exposure?

The connector housing is molded from rust-free black plastic to resist corrosion and typical road contaminants. While no electrical part is completely maintenance-free, the design reduces moisture intrusion and keeps contacts protected when unplugged.

• Durable plastic housing minimizes rust and oxidation risk
• Female socket style protects pins when not connected
• Made in USA with a one-year limited warranty for parts defects

Can it retrofit non-equipped vehicles and which CURT parts pair with it?

This harness can be used to retrofit weatherproof USCAR-type 7-way connections on vehicles that didn’t come factory-equipped. CURT lists compatible part numbers to simplify matching the harness to other retrofit components.

• Retrofits USCAR setups when combined with CURT retrofit parts
• Compatible with CURT part numbers 55415, 55515, 55664, 55774, 56415, 56515, 57101
• Works as the vehicle-side socket for aftermarket trailer wiring systems

Who this is for: Vehicle owners, fleet managers, and DIY installers who need a dependable, direct replacement for a damaged or missing USCAR 7-pin vehicle-side connector. If you tow trailers that rely on seven circuits—lighting, braking, reverse, and battery feed—and want an easy-to-splice, weather-resistant socket made in the USA with a one-year limited warranty, the CURT 56229 harness is built for that need.