A Simple Trick To Help Diagnose A Crackling / Popping 3-Way Switch

A switch making crackling or popping noises (and maybe flickering the lights) is dangerous. Here is one way to get more insight into what is wrong before you open up the box. Also, check out my fast explainer about how 3-way switches work: https://youtu.be/kCHBC3_3_C0 #electrical #3-way