How to use it? Continuously update car repair teaching

The unit is the best electrical tester for reducing diagnostic time in automotive electrical systems . Its long cable makes your testing easily. After a simple hook-up of the unit to the vehicle's battery, automotive technician can conduct a positive or negative battery current to the tip by rocking the power switch forward or backward.The unit has short-circuit protection and can test for bad ground contacts instantly. It allows you to track and locate short circuits.It can also test for continuity with the assistance of its auxiliary ground lead.It is a comprehensive 6-24V DC test kit.