Oyviny 4-Way Trailer Wiring Harness 56420 — Fits Hyundai & Kia 2019–2024, Plug-and-Play OEM Tow Package

Oyviny 4-Way Trailer Wiring Harness 56420 provides a factory-style 4-pin trailer connector that plugs into compatible Hyundai and Kia vehicles equipped with an OEM tow package, powering turn, tail and brake lights.

This compact, ready-to-connect wiring kit is designed specifically for certain Hyundai and Kia models from recent years. It supplies a standard 4-pin plug that routes vehicle lighting signals to a trailer without cutting or splicing your factory wiring. Built with corrosion-resistant terminals, 16 AWG bonded wire and a protective rubber dust cover, the harness matches the OEM form and function so you can tow light trailers, cargo carriers or bike racks with confidence.

Which vehicles does this harness fit?

The Oyviny 56420 harness is tailored to several Hyundai and Kia models produced in specific year ranges. Always verify your vehicle already has the factory (OEM) tow package before ordering — this harness connects to that factory tow connector rather than adding new modules.

• Hyundai Santa Fe: 2019–2023
• Hyundai Palisade: 2020–2022
• Hyundai Santa Cruz: 2022–2024
• Hyundai Tucson: 2022–2024
• Kia Telluride: 2020–2022
• Kia Carnival: 2022–2024

How simple is installation?

Installation is plug-and-play when your vehicle already has the OEM tow package connector. The harness was made to mate to factory sockets so no wire cutting, splicing, or additional adapters are required for compatible models.

• Direct plug-in to the factory trailer connector
• No special tools or wire taps needed for standard installations
• Instructions include an outline of where the factory connector is located

What materials and protection does the harness use?

Oyviny built the 56420 harness with durable components to resist the elements and maintain electrical contact. The terminals are tin-plated brass for improved conductivity, while pure copper conductors reduce voltage drop and heat buildup.

• Pure copper core wires for reliable signal transmission
• Tin-plated brass terminals to resist corrosion
• 16 AWG bonded wire construction for durability
• Rubber dust cover keeps terminals dry and clean

What lighting functions does the 4-pin connection support?

The standard 4-way connector provides the three essential lighting circuits required by most small trailers: running/tail lights, left/right turn signals and stop lights. It does not carry a separate brake controller or auxiliary power for charging batteries.

• Tail/running lights
• Left turn / brake signal
• Right turn / brake signal
• Simple, widely used 4-pin industry standard plug

Who is this for? The Oyviny 4-Way Trailer Wiring Harness 56420 fits owners of compatible Hyundai or Kia SUVs and vans who already have the factory tow package and need a clean, OEM-matching 4-pin connector. It’s ideal for light towing tasks—trailers, small boat trailers, cargo carriers and bike racks—where a standard 4-way lighting connection is sufficient. Choose this harness if you want a factory-style, corrosion-resistant plug that installs fast and keeps your vehicle’s wiring intact.