How to Use a Trailer Wiring Circuit Tester?

Answer There are two basic types of trailer wiring circuit testers used for troubleshooting electrical problems. A wiring harness tester plugs directly into the tow vehicle's wiring plug to determine if t... Read More »

Top Q&A For: How to Use a Trailer Wiring Circuit Tester

How to Use a Circuit Tester on a Car?

A circuit tester is a simple mechanism in the form of a pen with a light bulb and a ground lead with an alligator clip. The circuit tester is used for locating live (battery positive) wires and gro... Read More »

What is a circuit tester?

This is a device that tests a circuit to see if electrical power is reaching it. Circuit testers can be found at any hardware store or at home improvements suppliers. They are relatively inexpensi... Read More »

How to Use a 6/12 Volt Circuit Tester?

Electricity makes life better: it powers appliances and automobile, and bends the extremes of hot and cold toward a bearable, warm mean. It's a beloved friend that can harm or even kill if not resp... Read More »

How to Use a 12-Volt Circuit Tester?

Power is supplied to a vehicle's engine ignition, electric door locks, alarm systems and other accessories by the 12-volt circuitry that runs throughout the vehicle. When a circuit fails, you will ... Read More »