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.

An essential tool for testing light switches is a continuity tester. You also can use a multimeter by turning the dial to read “continuity.” ...

Q: My wife wanted me to install a dimmer switch in our dining room - and now the chandelier works only half the time. Two switches in the room control the light. Since I tried to install the ...