The digital voltmeter is the best basic tool for electrical troubleshooting, because it's calibrated and exact. But remember, the digital voltmeter can't detect a high-resistance fault if the circuit ...

We may receive a commission on purchases made from links. When undertaking DIY electrical projects at home, safety should always come first. Whether you're adding a dimmer switch, installing a new ...

The SureTrace™ Circuit Tracer Pro redefines what a circuit tracer can do. With numerical voltage readings, continuity testing, AC amperage readings, contactless tracing, and receptacle testing, it's ...

Well-known industry author and instructor Jim Johnson is offering a new video for technicians who want to sharpen their troubleshooting skills. "This HVAC training video program, is available in DVD ...

We’ve all had those long days where you wish you could just find the electrical problem and get to the next job — or go home! The best way to try and avoid these frustrating days is to review prints ...

As an industrial electrician, you'll encounter many complex electrical circuits and drives that will break down as they age. Chances are, you won't be an expert in repairing these devices, but you can ...

Not long after I began contributing to Hagerty eight years ago, I wrote a detailed four-part piece on electrical relays and how they work in cars. You can still find the articles here (Part I: Why We ...

Finding the real source of electrical trouble should be a process that starts at the most obvious solution and progresses from there. Before beginning any electrical repair, you should look at some of ...

Few endeavors can intimidate or frighten '65-'73 Mustang owners more than diagnosing an electrical problem. To most, Mustang wiring and harnesses are complex mysteries. In actuality, the vintage ...

Well-known industry author and instructor Jim Johnson is offering a new video for technicians who want to sharpen their troubleshooting skills. "This HVAC training video program, is available in DVD ...