Oyviny 4-Pin Trailer Wiring Harness for Jeep Wrangler JL/JLU & Gladiator JT (2018–2025) — Pure Copper, Plug-and-Play

Oyviny 56407 is a plug-and-play 4-pin trailer wiring harness that gives Jeep Wrangler JL/JLU (2018–2025) and Gladiator JT (2020–2025) owners a reliable electrical connection to power trailer lights.

This wiring harness is built specifically for Jeep models including Wrangler Sahara, Sport, Rubicon, Unlimited (2-door and 4-door) and Gladiator trims, delivering a sturdy, weather-resistant path from vehicle signals to your trailer’s lights. Its standard 4-pin flat connector supports common small trailers—boats, ATVs, utility trailers, and compact campers—while pure copper conductors and a sealed converter deliver stable conductivity and longer service life.

How does this harness connect to my Jeep and trailer?

The Oyviny 56407 attaches directly to the Wrangler or Gladiator factory sockets without cutting or splicing. Two vehicle-side connectors plug into existing passenger and driver sockets and the trailer-side 4-pin flat plugs into your trailer’s harness for immediate functionality.

• Plug-and-play installation—no wire splicing required
• Passenger and driver side vehicle connectors match factory ports
• Standard 4-pin flat trailer plug compatible with common trailers
• Dust covers protect unused connectors from dirt and moisture

What materials and electronics ensure reliable lighting performance?

This harness uses 100% pure copper conductors for improved electrical and thermal performance, and ABS components for corrosion resistance. The tail light converter employs surface-mount soldering and an epoxy-sealed enclosure to keep electronics stable and shielded from road elements.

• Pure copper wire for consistent signal transmission
• ABS housing resists corrosion and physical wear
• Surface-mount converter reduces heat while maximizing light output
• Epoxy sealing safeguards internal circuitry from moisture and vibration

Which trailers and towing setups are compatible with this 4-pin harness?

The flat 4-pin connector supports the lighting functions most small trailers require: running lights, brake lights, and turn signals. It is suitable for common tow loads like boat trailers, utility trailers, ATV haulers, and small campers that use the industry-standard 4-pin flat system.

• Boat trailers and small watercraft trailers
• Utility and landscaping trailers
• ATV/UTV trailers and gear haulers
• Compact campers and pop-up trailers using 4-pin wiring

Is the harness durable for outdoor and long-term use?

The design focuses on weather resistance and long-term reliability: sealed electronics, dust covers, and robust ABS connectors minimize corrosion and contamination. The heavy-duty construction and pure copper conductors are intended to maintain performance across repeated use and varied climates.

• Dust covers on trailer plug and fuse holder prevent dirt ingress
• Corrosion-resistant ABS connector shells
• Epoxy-filled converter protects soldered surface-mount parts
• Wiring rated for typical towing conditions and temperature ranges

Who is this for: The Oyviny 56407 harness is for Jeep owners who tow routinely with Wrangler JL/JLU (2018–2025) or Gladiator JT (2020–2025) models and need a straightforward, dependable 4-pin connection for small trailers. It suits DIY installers wanting a plug-and-play solution, owners of boats, ATVs, utility trailers, and anyone prioritizing protected electronics and pure copper wiring for steady light signals on the road.