What's the purpose of this looped black wire on my single pole switch? Trying to install a in wall timer switch that requires 3 wires : r/askanelectrician
3 wire smart switch wiring help : r/homeautomation
Adding a light to a 3 Way switch circuit : r/askanelectrician
DIY: How To Wire A 3 Way Switch (Multiple Lights) - IN 5 MINUTES! - YouTube
3-Way Switch Wiring: A Step-by-Step Guide - Bob Vila
Single 14/3 wire in light switch | DIY Home Improvement Forum