Discover the ultimate tool for automotive diagnostics with the 3-72-Volt DC Automotive Test Light. This versatile circuit tester boasts a wide voltage testing range from 3-72-Volt, ensuring compatibility with a variety of vehicle electrical systems. The LCD digital backlit display and LED indicator lights simplify reading voltage levels and identifying polarity. With a stretchable spring wire extending up to 141.74 in. it offers unmatched convenience for testing across your vehicle. Safety is enhanced with overload warnings and a buzzer alarm, ensuring precise and secure operation. Durable and thoughtfully designed, this tool is perfect for professionals and DIY enthusiasts alike.