VERSATILE APPLICATION: The automotive power tester is suitable for diagnosing all electrical systems in vehicles with 6 to 24 V DC. It can check switches, relays and the on/off status of diodes, fuses and circuits, which can help you reduce the diagnosis time in electrical systems of vehicles. POLARITY AND CONTINUITY TESTING: With this power circuit probe, you can quickly determine the positive and negative polarity of electrical cables and connectors in vehicles. It can also test continuity and perform a bypass using the additional ground cable. TRACKING & LOCATING SHORT CIRCUITS: The power tester uses advanced, highly sensitive probes to provide you with fast and accurate detection. With the continuity tester, you can save a lot of time troubleshooting vehicle wiring and quickly and accurately locate the faulty wire and its fault point. COMPONENT ACTIVATION AND TESTING: This car test lamp can activate and test components in and out of the vehicle's electrical system to check whether the components are defective or not, or if the component's rated current is higher than that of the circuit tester. HUMANISED DESIGN: The cable length of the auto tester is approx. 13.5 ft, allowing you to easily reach and test any electrical system. The LED display and buzzer warning can help you identify problems at a glance. Its clips with strong bite force that are not easy to fall off offer you a better experience. Product details: Colour: red/blue Operating voltage: 6-24V DC Cable length: 13.5 ft Overload protection: 8A (if the current exceeds 8A, this item will automatically cut off the power). Package size: 27.6 * 9 * 4 cm Package weight: 320 g Packing list: 1 * Circuit tester 2 * Manual Versatile application: The car power tester is suitable for vehicles with 6-24V DC to test switches, relays, diodes, fuses and circuits. Polarity and continuity test: The tester quickly shows the polarity and checks the continuity of cables and plugs. With ground cable for bridging. Short circuit tracking: With highly sensitive probes, the power tester helps to quickly find short circuits and locate faults in the vehicle wiring. Component testing: Activates and tests components in the vehicle to determine whether they are defective or whether the rated current is correct. Humanised design: The 13.5 ft long tester allows easy access to systems, with LED display, buzzer warning and strong clips for better grip.