CURT 7-Way USCAR Replacement Wiring Harness — 24-inch Color-Coded Bonded Wires, Female Vehicle-Side, Made in USA

The CURT 56229 is a 7-way USCAR female replacement vehicle-side wiring harness with 24-inch color-coded bonded wires for reliable trailer electrical connections.

When a factory or aftermarket USCAR 7-pin socket becomes cracked, corroded, or nonfunctional, the CURT 56229 offers a straightforward, vehicle-side replacement. Built with durable black plastic and clearly color-coded leads, this harness supplies power and signals for tail and brake lights, turn signals, reverse lights, electric trailer brakes, and a battery feed, plus a solid ground. It’s assembled in the USA and designed to retrofit into many installations where a weatherproof USCAR connector is needed.

What does this harness replace and why choose the CURT 56229?

This unit replaces damaged or missing USCAR-type vehicle sockets, restoring the seven circuits required for most trailers. CURT engineered the 56229 for a direct, dependable connection on the vehicle side and uses bonded wiring to reduce movement and abrasion during installation.

• Replaces factory or aftermarket USCAR vehicle harnesses
• Female 7-way socket designed for the vehicle side of the connection
• Durable black plastic housing resists rust and environmental wear
• Made in USA, backed by a one-year limited warranty

How do I install the CURT 56229 on my vehicle?

Installation is a splice-in replacement: cut out the old harness and connect the CURT color-coded wires to the vehicle circuits. Bonded wires simplify routing and reduce the risk of chafing; use appropriate connectors, heat shrink, or solder and seal for a weatherproof splice.

• 24" color-coded, bonded wires for easier splicing and routing
• Match wire colors to vehicle functions or existing harness colors
• Use marine-grade crimp connectors or solder, then seal connections
• Secure wiring away from moving parts and heat sources

Which trailer functions are supported by this 7-way harness?

The CURT 56229 carries seven circuits commonly required for modern towing setups. It provides separate feeds for lighting, braking, reverse, battery charging or auxiliary power, and a ground return—covering standard towing needs without additional converters.

• Tail lights and brake lights
• Left and right turn signals
• Electric trailer brakes and reverse lights
• Battery/aux power feed and dedicated ground

Can this harness retrofit different CURT part numbers or non-equipped vehicles?

Yes—this replacement harness is suitable for retrofit work and can be used where vehicles lack a weatherproof USCAR-type connector. CURT lists compatibility with several part numbers that it can retrofit, making it a flexible option for many installations.

• Retrofits weatherproof USCAR-style 7-way connectors
• Compatible with CURT retrofit part numbers such as 55415, 55515, 55664, and others
• Useable for vehicles not originally equipped with a USCAR socket
• One-year limited warranty provides added peace of mind

Who is this for? The CURT 56229 is aimed at vehicle owners, RV and trailer mechanics, and DIY tow-enthusiasts who need a reliable, factory-style replacement for a damaged USCAR 7-way vehicle socket. If you want a straightforward splice-in harness with color-coded, bonded wires and a rugged plastic socket built for road use, this part restores full trailer functionality without complex converters or extra modules.