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.

With this guide, you'll learn the ins and outs of troubleshooting your home and household electronics using a handy multimeter.

You can test a continuity or multimeter by touching the probes together and checking for the light or moving needle.

You can then use the multimeter’s continuity tester along with a scrap piece of wire that stretches between the two switch boxes to determine the two traveler wires.

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