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

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 ...

A multimeter is a tool used to measure voltage, current, and resistance. When the car is running, the alternator should keep battery voltage between 13.5 and 14.5 volts to keep your car from dying.

If you're looking to get into automotive electrical testing, Harbor Freight has just the right kit for you to get started. Here's what it does.