Versatile Circuit Tester: This automotive circuit tester diagnoses vehicle electrical system issues by detecting current in circuits. The kit includes a cable tracer that locates open or short circuits without damaging insulation through beep intensity 30 PCS Test Probe Kit: Our power circuit probe tester has 30 probes for harness connectors, sensors, and injectors. Piercing and straight probes, 90° and 135° probes, mini crocodile clips, and jumper wires. Color-coded design helps you identify wire uses Long-Distance Usage: Our probe tester has two 19.7 ft (6 m) cables (main + extension) and universal connectors for most devices., supports testing polarity, current, resistance, frequency, continuity, line tracing, diode check, and component activation Convenient to Use: The power circuit probe features a built-in flashlight that ensures clear visibility for testing in dark or low-light conditions. Comes with a storage case, making it easy to keep in your car trunk for quick access whenever needed Wide Application: This automotive wire tracer is suitable for testing within 8–35 DCV working environments. It can be widely used for cars, pickups, motorcycles, SUVs, excavators, boats, and more