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Hyundai Tucson (2025–Present, Excluding N Line Hybrid) Flat-4 Wiring Installation

CURT 56554 powered flat-4 wiring harness used for 2025–Present Hyundai Tucson installations excluding N Line Hybrid

The 2025–Present Tucson, excluding N Line Hybrid, uses vehicle-specific connections at the driver-side taillight and both rear bumper lighting circuits with a powered converter and dedicated battery lead. We confirm the vehicle configuration, access and connect each lighting circuit, establish protected ground and battery power, route the 4-flat to the hitch, test every function, and carefully reassemble the vehicle.

Vehicle Coverage: 2025–Present Hyundai Tucson, excluding N Line Hybrid
Connection: Vehicle-specific taillight and bumper connectors
Output: 4-Way Flat
Installation Time: Up to 1.5 hours

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CURT 56554 powered flat-4 wiring harness used for 2025–Present Hyundai Tucson installations excluding N Line Hybrid

1. Confirming Fitment and Disconnecting Power

The vehicle is confirmed to be a supported 2025–Present Tucson configuration and not an N Line Hybrid. The negative battery terminal is disconnected and isolated before the lighting circuits or dedicated power lead are opened.

CURT 56554 powered flat-4 wiring harness used for 2025–Present Hyundai Tucson installations excluding N Line Hybrid

2. Removing the Taillights and Opening Rear Access

Both taillights are released carefully and their factory connectors are separated without damaging the locking tabs. Controlled paths are opened from the driver-side taillight area to the rear bumper connections.

CURT 56554 powered flat-4 wiring harness used for 2025–Present Hyundai Tucson installations excluding N Line Hybrid

3. Connecting the Taillight and Bumper Circuits

The brown-wire harness branch is guided into the driver-side taillight cavity and connected between the factory harness and lamp. The left and right turn-signal branches are connected at the corresponding rear bumper circuits and secured across the vehicle.

CURT 56554 powered flat-4 wiring harness used for 2025–Present Hyundai Tucson installations excluding N Line Hybrid

4. Securing the Converter, Ground, and Battery Power

The converter is mounted with its sealed side oriented correctly on a protected surface away from wheel spray and road debris. The ground is secured to clean vehicle metal, and the fused 12-gauge power lead is routed safely to the battery away from heat, movement, pinch points, and sharp edges.

CURT 56554 powered flat-4 wiring harness used for 2025–Present Hyundai Tucson installations excluding N Line Hybrid

5. Routing the 4-Flat, Testing, and Reassembly

The 4-flat is routed to the center of the hitch and all loose wiring is supported securely. Running lights, brake lights, both turn signals, and ground integrity are tested before the battery connection, taillights, bumper-area connections, and other removed components are restored.

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Serving Upstate South Carolina:

Anderson • Boiling Springs • Clemson • Easley  • Fountain Inn • Gaffney • Greenville • Greenwood • Greer • Laurens • Mauldin • Simpsonville • Spartanburg • Taylors • Travelers Rest 

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