Wide voltage range Car Repair Cable Circuit Wire Tracking Tool is suitable for vehicle hybrid or single 42 V systems and operates at 6 to 42 volts DC. Portable design DC 6-42V Automotive Circuit Tester comes with a storage bag for easy transportation and storage, so you can carry it with you on service calls. Fault location and circuit break detection The Automotive Circuit Tester can find fault points and detect short circuits and breaks in the car wiring system. Connect the transmitter to the circuit or wire under test and scan the circuit with a tracer. Use a flexible head to reach difficult areas and pinpoint the fault. Non-contact technology Electrical Open Short Finding Tool uses non-contact technology. The transmitter and receiver LEDs display open or short circuit conditions, with adjustable sensitivity, making it suitable for both professional technicians and DIY enthusiasts. 2-3 practical use scenarios - In a repair shop, diagnose a suspected wiring fault in a 42 V system after a component failure. Attach the transmitter to the suspected circuit, scan with the tracer, and locate the fault quickly with the flexible head. - While working on a hybrid vehicle, verify continuity and identify hidden breaks in wiring harnesses such as doors, consoles, or under-dash areas without dismantling components. - During a DIY car electronics install or modification, check for open circuits or shorts in multi-branch harnesses to ensure correct wiring before powering up.