Kefly 7-Way Round Pin Trailer Truck Circuit Plug Tester Replace 7865L, Trailer Tractor Light Tester

【Compatibility】7 Round Pin Trailer Truck, Replace 7865L. 【Function】Used to measure and troubleshoot trailer circuits including left and right turnsignals, hazard lights, brake lights, clearance, tail tags, or ABS circuits. 【Easy Disassembly 】Winged handle design allows for easy removal of the tool from the electrical connector; providing efficient operation during testing.. 【Simple Operation】Connect the circuit plug tester to the electrical connector, and by operating the function switches, the LED indicator will show the condition of each circuit, clearly and accurately reflecting the problem.. 【Warranty】Warranty 3 years, if you have any questions or concerns about our products, please feel free to contact us via email, we will try our best to provide prompt assistance and respond to your questions within 24 hours to provide you with a satisfactory solution!