Light Switch Wiring Diagram - Easy This light switch wiring diagram page will help you to master one of the most basic do it yourself projects around your house.. Wiring a single pole light switch. Power at Switch. Power From Lights. Hey, doing it yourself is great but if you are unsure of the advice given or the methods in which to job is Wiring a 2-Way Switch - how-to-wire-it It should also help in understanding the functions of each type of switch. When wiring a 2-way switch circuit, all you're really doing is controlling the power flow (Switching off/on) to the load (a light, lamp, outlet, ceiling fan etc.) Now a typical circuit will contain a 3-wire cable known as romex.About Me · Trailers · Ceiling Fans · Romex Cable · 4-Way Switch · Component Diagrams Standard Single-Pole Light Switch Wiring Standard Single-pole Light Switch Circuit Diagram. Single-Pole Switch Wiring Diagrams. The right way to wire a single-pole switch depends upon where the switch is located relative to the light. The diagrams below show the various options.