The Harbor Freight MADDOX back-probe kit lets DIYers test automotive sensors safely. Just insert between wire and insulation, ...

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.

Sign a document, annotate an image, or sketch a picture on your iPhone or iPad and then use it on your Mac with Continuity Markup and Continuity Sketch.

Battery and charging system testing is another popular use for the multimeter. Batteries should measure 12.6 volts when at rest if fully charged.

In this article, I’ll show you how to use a multimeter to troubleshoot some basic electronic components, such as resistors.