The trailer brake light tester is designed to help you quickly and accurately diagnose issues with your trailer's brake lights. This tool is compatible with a wide range of trailers, making it a versatile addition to your maintenance equipment. Its compact and design allows performance, while its easy-to-read indicators provide clear feedback on the status of your trailer's electrical system. Features -Color:Black -Material:Plastic and metal -Size:5.00X3.50X1.00cm/1.97X1.38X0.39in -Rapid testing: quickly connect and test trailer wiring, allowing all connections are secure and functional -Comprehensive testing: the trailer wiring test plug is capable of testing multiple trailer light circuits, allowing safe and operation -Easy to use: plugandplay design requires no additional tools, making it simple for anyone to operate -Unique design: this trailer wiring tester stands out with a distinctive tester that adds character to your vehicle -Wide compatibility: suitable for various vehicle types and trailer connectors, providing broad applicability Package list: 2 x trailer testers