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

Measuring Voltage With a multimeter, you can measure both AC and DC voltage—particularly useful for locating short circuits or determining if a rechargeable battery is holding a charge.

Multimeters can measure voltage, amperage, and resistance — things a knowledgeable mechanic can apply to several systems in a vehicle.

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 ...

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.

The unit of measure for AC voltage is [volts, AC]. To measure AC voltage using a benchtop multimeter, select the “AC V” mode and connect your probes.