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.

Automotive circuits will use either, depending on the circuit. To test the battery, you’ll want to use the DC voltage setting. This will be illustrated by a ’V’ with a straight line beneath it.

How to Check the Power Supply With a Multimeter. The power supply in your computer manages all of the power required to run each component of your computer. When this critical component begins to ...