- Excellent function: The high quality circuit probe tester is designed to shorten diagnosis time in automotive electrical systems and support fast, convenient repairs of your vehicles. - Easy to use: Supplied with a roughly 4 m long cable, the tester minimizes distance limitations and enables a simpler test process during operation. - Current direction control: After connecting to the car battery, technicians can direct positive or negative battery current to the tip by moving the power switch forward or backward. - Protection and grounding check: This 6-24 V DC test kit includes short-circuit protection and can instantly check for poor grounding contacts. - Practical compatibility: Suitable for automotive technicians and hobbyists working with 6-24 V DC electrical circuits in vehicles. - Use scenarios: - Diagnose grounding issues and verify good earth connections in engine bay wiring. - Check polarity and current flow for automotive accessories (lights, sensors, wiring harnesses). - Rapidly identify short circuits or fault paths during battery or wiring repairs.