While using a digital multimeter to diagnose electrical problems on customers’ equipment, I frequently hear the comment, “I’ve got one of those multimeter things, but I never learned how to use it.” ...

How do you know if a resistor is correctly restricting the flow of electricity? Using a multimeter is an obvious answer. However, there is more to it than meets the eye. This article will explain what ...

When your car doesn’t start, often a low or dead battery is the culprit. Unfortunately, most vehicle owners do not check their battery until it fails. As preventative maintenance, the suggested best ...

It is a device used to manage electrical flow within a system. In air conditioning units, it regulates the connection between various components, like compressors and fans, to control cooling and ...

Car batteries don’t just die. Well, they will if you leave them for long enough. but not just over the course of a few hours or even just a day or two. Finding your car has a dead battery after it was ...

The alternator is a device that keeps your car’s electrical system running once the engine is on. It’s essentially a small generator that converts mechanical energy into electricity, bolted to the ...

A myriad of electrical gremlins can come to light with a car’s age—bad terminals, broken wires, blown fuses, and even fried relays. Knowing how to diagnose those problems can be the difference between ...

Car batteries supply and store the electricity used in your vehicle. It can be frustrating to find out your vehicle's battery has failed as you’ll likely be unable to start the engine. Unlike far ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." When tackling DIY projects that involve any kind of electrical wiring, components, or circuitry, you need ...