For all of you who have a multimeter thrown in a drawer or toolbox but don’t know how to use it, these instructions will help in your search for missing voltage.

For automotive circuits, we recommend an auto-ranging meter with at least 20MΩ of internal resistance. Make sure to use the correct multimeter setting for a car battery.

A multimeter is an electronic measuring instrument that is used to gauge volts, amps, and resistance from an electrical source. The most common automotive application for a multimeter is to test the ...

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

Multimeters are indispensable tools when working on electronics. It’s almost impossible to build any but the most basic of circuits without one to test and troubleshoot potential issues, and … ...

Learning how to test glow plugs ensures your diesel engine remains reliable and efficient. Here is how to test glow plugs.

A brightly lit bulb indicates that there is a short circuit on the output, a dimly lit bulb indicates some sort of load (an output volt meter would be a handy addition), and no light suggests an open ...

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