- [PROFESSIONAL CIRCUIT TESTER] This essential automotive circuit tester operates efficiently within a voltage range of 6V to 48V DC, making it compatible with a wide variety of vehicles. It's perfect for diagnosing issues in electrical systems, including headlights, taillights, and turn signals. - [SAFE AND RELIABLE DESIGN] Featuring a pure copper clip and an insulated cover, this tester ensures a secure grip while providing protection against electric shocks. This thoughtful design enhances user safety, allowing you to conduct tests with peace of mind. - [LONG REACH FOR FLEXIBILITY] The 7FT PU spring wire extends your reach, offering the flexibility to access tight or hard-to-reach spaces in your vehicle's wiring, ensuring comprehensive testing without hassle. - [EASY TO USE] Designed with a large clip size, this circuit tester allows for comfortable hand operation. It's user-friendly, making it suitable for both seasoned professionals and DIY enthusiasts looking to troubleshoot their vehicle's electrical system. Applications: - Perfect for checking the functionality of your car's lighting system before long trips. - Ideal for diagnosing electrical issues in classic cars that may have outdated wiring. - Helpful for quick checks on trailers or RVs to ensure all lights are operational before heading out. With its robust design and user-friendly features, this circuit tester stands out as a reliable tool for all your automotive electrical testing needs.