1.Multiple Use: With its multifunctional integrating design, our Car Circuit Tester enables efficient load testing, short circuit or fuse fault diagnosis, voltage testing, and pulse signal testing. It also includes a power polarity display for a complete diagnosis of any electrical issue 2.Efficient Circuit Testing: The Car Circuit Tester provides a unique combination of bulb mode and LED digital display to diagnose a wide range of electrical issues, including battery failure and fuse faults. Equipped with three working modes, this tester allows you to choose the mode that suits your needs 3.Advanced Voltage Troubleshooting: Our Car Circuit Tester provides improved testing capability with double function as a load, enabling you to quickly determine power failure of the wire and uncover invisible poor contacts. Along with bulb load and voltage testing, it also helps diagnose virtual voltage faults for more accurate results 4.Modernized Testing Process: Conduct load simulation testing directly, with our Car Circuit Tester displaying positive and negative polarity using red and green LEDs. Equipped with load plugs and a clear display for simple and efficient testing