Product Function: This product is suitable for rewiring taillights, brake lights, and turn signals for various trailers (including boat trailers, RVs, ATVs, and utility trailers), ensuring stable and secure lighting signal connections in various weather and road conditions. High-quality materials: The trailer wiring harness kit is made of thick, high-quality wire coating to your safety. Our plugs are and well-insulated, ensuring reliable and long-lasting operation in all weather conditions. 4 pin 5 wire trailer connector replacement is designed to match industry-standard 4-way flat sockets, provides a male plug for your trailer and can be used to replace a worn out, broken wire on a wide variety of trailers Y-Harness Connector: The 4-pin trailer harness adapter has a Y-shaped design, which allows it to split from different sides of the trailer.Having the Y at the front eliminates the need to have to run a wire across the axle like most others Adequate Length: The 26ft overall length and 2.5ft ground wire provides enough length for flexible installation and trailer rewiring.5 wire trailer wire is suitable for marine boat trailers, horse trailers, ATV trailers, and already other trailers with 4-way plugs Cable Length: 26 feet (7.92 meters) Product Interface: 4-way Product Structure: Y-type wiring Rated Voltage: 300V Wiring Method: The kit features a Y-shaped wiring harness, splitting into left and right wires from the front connector. Route the wiring along the inside or outside of the trailer frame, avoiding edges. Color codes are as follows: White: Ground (negative) Brown: Taillight Yellow: Driver's side brake light/turn signal Green: Passenger side brake light/turn signal Extra wire (5th): can be used for electric brakes or auxiliary devices. Connect the corresponding colored wires to the terminals on the taillights, brake lights, etc. Secure with the included terminals, crimpers, or heat shrink tubing. Secure the white ground wire securely to exposed metal to good contact. Secure the wiring with cable ties or clamps to prevent drag or abrasion. After completion, plug the unit into the towing vehicle's socket and test the taillights, turn signals, and brake lights in sequence to confirm proper brightness and function. Color: As Shown Material: plastic Package Contents: 1 x 26FT Trailer Wiring Harness Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.