- Simple operation: After connecting the circuit tester to the vehicle battery, you can route the battery's positive and negative current to the probe by moving the power switch forward or backward. - Wide range of applications: The power sensor can test conductivity and test voltage polarity. It can detect lights, motors, trace and locate short circuits. This helps quickly identify if there is a short circuit or poor contact in the vehicle's electrical system components. - Test cable length: The cable is approximately 16 feet long, enabling testing of any electrical system. - Short circuit protection: The circuit tester includes short circuit protection to detect poor grounding immediately. Use scenarios - Diagnose a non-working light or accessory by testing conductivity and polarity to confirm proper wiring and grounding. - Trace a short circuit along a wiring harness by locating where continuity changes and pinpointing poor contacts. - Verify grounding and circuit integrity for aftermarket sensors or motors to ensure reliable operation.