Product Description: Trailer Socket Tester 12V Electrical Compatibility: This trailer socket tester is specifically designed for 12V electrical systems, ensuring seamless integration and performance for your trailer's electrical connections. Dual Connectivity: Engineered to connect effortlessly, this tester links one side to the 13-pins plug of your trailer and the other side to the 13-pins socket of your towing vehicle. This dual connectivity aids in comprehensive diagnostics, ensuring both ends of your connection are thoroughly inspected. LED Indicator System: Equipped with intuitive LED indicators, this tester provides instant feedback on the status of your wiring circuits. Whether on the car or the trailer, easily identify any failures or issues with the electrical connections, minimizing downtime and enhancing safety. 13-Pole Plug and Socket Compatibility: Designed to work with 13-pole plugs and sockets, this tester is versatile and suitable for a wide range of trailers and towing vehicles, guaranteeing broad applicability and convenience. High-Quality Construction: Crafted from premium plastic material, this tester is both lightweight and durable. Its robust construction ensures longevity and reliability, making it an essential tool for regular maintenance and troubleshooting of trailer circuits. Enhance your trailer maintenance routine with this all-in-one trailer socket tester, perfect for ensuring safe and efficient electrical connections every time you hit the road.