How To Use An Automotive Circuit Tester

The tester can be used on all circuits up to 30 amps.

How to use an automotive circuit tester. The probes make contact with the exposed terminals of circuit breakers and switches while the three prongs of a plug-in tester can be inserted directly into a receptacle in the same way as any electrical plug. KZYEE Automotive Circuit Tester Enables to accurately diagnose the DC Voltage AC Voltage Resistance and Diode of the 12v-24v electrical systems by merely pressing the mode button. The point may be used to penetrate the insulation of a wire to make a voltage test if you cant access a terminal.

Touch the hot wire with one lead and the ground wire with the other Photo 1. It will help pinpoint and find a problem on an electrical circuit. This unit is a electrical tester for reducing diagnostic time in automotive electrical system.

Using a circuit tester is essential when diagnosing issues on vehicle and trailer wiring. How to Use a 12-Volt Circuit Tester. If it lights try again with the clip earthed to the car body.

Use the two-lead circuit tester to check for voltage. Place the pointed end of the tester on or in the circuit terminal or wire to be tested. Step 2 - Before staring any testing the test light itself must be tested connect the clip or clamp to a known ground source in this case the battery negative terminal is being used but almost any metal surface on the vehicle will work.

Place one lead on a livehot wire usually black but can be any color other than green or white and the other on a neutral white or ground green or copper wire and the testers light will turn on. Connect the ground clip of the 12 - volt tester to a well-grounded source. To do this youd need to connect one end of the test lightpreferably a circuit tester to the positive end.

Confirm that the circuit tester is working by carefully touching the hot wire with one lead and a neutral wire with the other. Call it a Tes. If the lamp fails to light the.