CURT 7-Way USCAR Replacement Wiring Harness — 24-Inch Color-Coded Bonded Wires, Vehicle-Side 56229

The CURT 56229 is a 7-way USCAR vehicle-side replacement wiring harness with 24-inch color-coded bonded wires designed to restore trailer electrical connections reliably.

If your vehicle's USCAR 7-pin socket is cracked, corroded or missing, this CURT replacement harness provides a direct, serviceable solution so you can reconnect tail lights, turn signals, reverse lamps, trailer battery feed, electric brakes and ground. Built with rust-resistant black plastic and labeled wires, the 56229 is intended for splicing into existing vehicle wiring and matches the USCAR female socket standard used on many tow vehicles.

What does this harness replace and why choose it?

This unit is made to replace damaged or missing USCAR-style vehicle-side 7-way connectors without requiring a full socket assembly swap. It’s a straightforward retrofit for vehicles that originally used USCAR sockets and for owners who want a durable, made-in-USA component.

• Direct replacement for USCAR-type 7-way vehicle sockets
• Compatible with CURT part numbers used in retrofit kits
• Made from rust-free black plastic for long-term durability
• One-year limited warranty for added confidence

How easy is installation for a DIYer?

Installation is designed to be accessible for someone comfortable with basic wiring splices and trailer wiring conventions. CURT supplies 24 inches of bonded, color-coded wire so you can route and splice into your vehicle harness without immediately re-crimping or soldering at the connector end.

• 24" bonded wires allow for flexible routing and secure splicing
• Color-coded wires match standard trailer circuits to simplify connections
• Female USCAR socket fits vehicle-side mounting locations
• Simple hand tools and common connectors are all you need

What trailer functions will be supported once installed?

The 7-way wiring layout supplies power and signals for the full suite of common trailer features. After proper splicing and testing, the harness will carry brake and turn signals, tail lights, reverse lights, trailer battery power and an electric brake circuit, plus a ground.

• Brake, tail and turn signal circuits for legal road use
• Reverse light circuit for trailer backup lamps
• Dedicated circuit to feed a trailer battery or auxiliary power
• Electric trailer brake output and a reliable ground connection

Will this work with weatherproof USCAR systems or other CURT parts?

Yes — the 56229 is compatible as a retrofit when adapting weatherproof USCAR-style 7-way sockets to vehicles lacking the OEM connector. CURT documents applicable retrofit part numbers for seamless integration.

• Retrofits weatherproof USCAR-type 7-way installations
• Works with specific CURT retrofit part numbers for straightforward replacement
• Designed to match established USCAR pinouts and wiring color codes

Who is this for: The CURT 56229 harness is intended for vehicle owners, fleet technicians and DIY mechanics needing a dependable, vehicle-side replacement for a USCAR 7-way connector. It’s ideal when the original socket is damaged, corroded or absent and you want a made-in-USA, easy-to-splice solution that restores full trailer lighting, braking and auxiliary circuits.