- Multi-Functional Design: This automotive circuit tester is your all-in-one solution for vehicle diagnostics. It performs component activation, continuity tests, voltage detection, diode checks, ground detection, and short circuit tracking. Easily identify positive and negative poles, meeting a wide range of testing needs with one tool. - Flashlight & LCD Display: Equipped with a built-in flashlight, this tester is perfect for use in dark or low-light conditions. The LCD display provides clear visibility of test results and vital information, ensuring you can work efficiently regardless of lighting. - Wide Compatibility: This circuit tester is suitable for 6-30V vehicle electrical systems, making it versatile for cars, trucks, SUVs, excavators, boats, and more. It helps ensure your vehicle's electrical system operates smoothly. - Short Circuit Positioning: The tester features advanced short circuit tracking capabilities. Quickly and accurately locate short circuits, saving you valuable time and effort during troubleshooting. Practical Applications: - Use it to diagnose electrical issues in your car before a long road trip, ensuring your vehicle is road-ready. - Test the electrical systems of heavy machinery or boats, maintaining optimal performance in demanding environments. - Perform routine maintenance checks on various vehicles to prevent unexpected breakdowns. Compact and durable, this automotive circuit tester is designed for both professional mechanics and DIY enthusiasts, providing reliability and convenience in every use.