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.

Multimeter Cost Multimeters are versatile mechanisms that can be leveraged beyond automotive applications. Even basic multimeters can measure voltage and current in household items such as switches, ...

Mark this wire. 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.

Switch the multimeter to measure resistance at its lowest setting, and test across the fuse. A reading of OL, or significantly higher than 20 ohms, suggests the fuse is blown.