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

If the light switch is in good order the multimeter will now read a resistance value close to zero. In my case, I logged 0.4 ohm for an old 3-way switch I know works just fine.

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.

A multimeter is something every RVer should carry in their RV’s toolkit. Multimeters come in either analog or digital versions and can be used for a vast array of electrical tests and repairs.

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