Oyviny 4 Pin 5 Wire Trailer Wiring Harness – 50FT, Pure Copper, Nylon Net Protection, 4-Way Flat Plug

Meet the Oyviny 4 Pin 5 Wire Trailer Wiring Harness, a robust solution designed to simplify re-wiring your trailer’s taillights. Built with a wishbone Y-harness design, it allows two brown wires to run to the left and right taillights simultaneously, reducing the need for splicing while keeping wiring neat and reliable.

Key benefits at a glance

• Long reach: 50 feet of male 4-flat wire plus 2.75 feet of ground wiring provide ample length for flexible routing from the hitch to the rear lights.
• Color-coded wires: Clear color coding helps you identify brake lights, turn signals, and taillights for quicker installation and easier future troubleshooting.
• Quality construction: Thick PVC insulation, pure copper conductors, and a black nylon net tube protect against corrosion and abrasion for longer life.
• Universal compatibility: Designed to fit industry-standard 4-way flat sockets and replace worn or damaged wiring on many trailers.

Real-world use scenarios include replacing aging harnesses on utility trailers, boat trailers, or small campers, or setting up a new wiring run where flexibility matters. The pure copper wiring ensures good conductivity along the harness, supporting steady lighting performance across changing loads.

Durability and protection for everyday use

• The nylon net tube adds a rugged shield around the wires, helping deter wear from vibration and exposure during travel.
• Color-coded wires reduce miswiring risk during retrofits or upgrades, a common challenge for DIY installs.
• The 50-foot length is ideal for routes that require extra slack near the tongue or undercarriage, enabling cleaner mounts and routing.

Installation notes: This kit includes a male plug for your trailer side and is designed to replace a worn-out line or rewire a trailer with a standard 4-way flat interface. Use the color map as a guide to connect to brake, turn, and taillight circuits, and ensure a secure, protected run beneath the trailer.

In short, the Oyviny 4 Pin 5 Wire Harness offers a practical balance of length, durability, and ease of use. It suits DIY enthusiasts and professionals seeking a dependable wiring upgrade that’s ready for rugged road conditions. Consider this harness if you want a straightforward, adaptable solution for safer, more reliable trailer lighting.