4 Pin Trailer Plug Tester,4-Way Flat Trailer Light Wiring Tester with LED Indicators for Brake, Turn & Tail Lights,Universal Trailer Wiring Circuit Tester for Cars, Trucks & Trailers

4 Pin Trailer Plug Tester,4-Way Flat Trailer Light Wiring Tester with LED Indicators for Brake, Turn & Tail Lights,Universal Trailer Wiring Circuit Tester for Cars, Trucks & Trailers

• 4-Way Trailer Tester: This 4-pin trailer plug tester is designed to quickly check taillights, left and right turn signals, and brake light functions, helping you diagnose wiring or connection issues with ease. By ensuring your trailer wiring is correctly installed and functioning properly, it improves driving safety and helps prevent accidents caused by faulty lights — a practical tool for efficient troubleshooting and reliable performance.
• Premium Materials: Made of durable ABS and copper, this 4-way trailer circuit tester offers excellent electrical conductivity, weather resistance, corrosion resistance, and impact resistance. Sturdy and reliable, it won’t rust easily and ensures long-lasting, stable performance.
• Easy to Use: With a simple plug-and-play design, this trailer light tester makes checking your trailer lights quick and hassle-free. Just plug it into the connector, switch on your vehicle lights and signals, and check the clearly labelled LED indicators to see which lights are working.
• Versatile Use: Compatible with 6–24V DC systems, this trailer wiring tester is suitable for a wide range of vehicles, including trucks, trailers, boats, campers, caravans, and food trucks.
• Easy to Store & Carry: This trailer connector tester is easy to store in your toolbox, glove compartment, or pocket, and even comes with a convenient hanging hole to attach to your keychain. Whether for daily use or outdoor work, it’s always ready when you need it, making trailer wiring tests quick and convenient wherever you go.