3 Way Wall Switch May 28, 2019 Understanding Three. Three-way wall switches are most commonly used to control a light fixture from two locations, such as from both ends of a hallway or stairway. www.thespruce.com Types Of 4 Prong Dryer PlugsKicker Zx700 5 Wiring DiagramHigh Pressure Sodium Lamp Wiring DiagramControl Panel Wiring Diagram PdfLight Switch Color WiresDo Dimmer Switches Get HotLow Voltage Lighting Wiring DiagramWiring A Plug Socket Red Black