Shop Nilight 25 Feet 4 Way Trailer Wire Extension Cable 14 Gauge 4 Conductor 100% Pure Copper Insulated Heavy Duty Wire Weatherproof for 4 Pin Blade RV Trailer Automotive in high quality, support 2 Years Warranty. Easily connect your trailer essential components including taillights, brakes, turn signals. The color-coding wires allow for quick identification and hassle-free installation, even for those with limited experience.