Free shipping over $100+

CURT™ Custom Wiring Harness (4-Way Flat Output) / 55310
CURT™ Custom Wiring Harness (4-Way Flat Output) / 55310

CURT™ Custom Wiring Harness (4-Way Flat Output) / 55310

Regular price
Regular price
Sale price
Unit price
Sold out
Shipping calculated at checkout.

CURT custom wiring provides everything you need to connect your vehicle's electrical system to a trailer. With plug-and-play connectors, a custom wiring harness easily integrates with your vehicle taillights to provide a standard trailer wiring connector, typically in the form of a 4-way flat.

This custom wiring harness features a vehicle-specific design to perfectly fit certain years of the Hyundai Santa Fe SUV, Hyundai Elantra Touring and Kia Rio5 (to verify vehicle compatibility, see the CURT application guide or use the Vehicle Lookup on the CURT website). It uses OEM-compatible connectors to "T" into the vehicle's taillight assembly and provides a standard 4-way flat output to power the taillights, brake lights and turn signals on your trailer.


  • Plugs into vehicle tail light assembly to provide a 4-way flat socket

  • Simple plug-and-play design eliminates the need for cutting or splicing

  • 4-way flat output connects tail lights, brake lights and turn signals

  • Equipped with a 3-wire to 2-wire tail light converter

  • Constructed with SMT circuitry for better performance and durability

  • Dust cover included to keep connector clean when not in use