This video covers the essential steps to properly test a car's alternator and diagnose common alternator issues. The guide ...

Determining the speed of a battery charger to change voltage requires careful consideration of many factors to ensure a safe and proper measurement. Using the right tools makes ...

Proper safety procedures are critical when testing high-voltage systems. As the following examples prove, mistakes happen. However, when the safety of you and your coworkers is at stake, neglecting ...

Voltage testers and meters have been around for years, but most of them had two probes or tips that required you to be in contact with the electrical wire to check its voltage.

Using a “test light” has historically been the simplest way to do voltage chasing, on both the power and ground sides of polarity.