Universal Fit:4 Way Flat Trailer Wiring Tester is universal for most Trucks and tractors.Unique Benefits: The 4-Way Flat Trailer Wiring Tester can withstand weather, corrosion, and impact to provide years of reliable service. The 4-Way Flatbed Trailer Wiring Tester effectively splits your trailer wiring harness in half, allowing you to quickly track issues to either the tractor-side or trailer-side wiring With this wiring harness, you can confidently tow trailers and caravans to fit other accessories that require electrical connections. Use insulating materials to avoid leakage. The plug is made of reinforced plastic to avoid embrittlement due to long-term exposure. Special Features: Product Color: Black, Green, Silver Tone Product Material: Plastic, Metal Product Size: 4.9x3.3x1.1cm/1.93"x1.30"x0.43"(L*W*H) Easy Installation: This is Non-OEM product, accessory only! The harness is designed for easy installation featuring a plug-and-play design that eliminates the need for cutting or splicing wires. Simply connect it to your vehicle's existing wiring system for quick and hassle-free installation. Package Content:Package includes 1 Pc 4 Way Flat Trailer Wiring Tester