Wiring a 2-Way Switch - how-to-wire-it Wiring a 2-Way Switch. By wiring a 2-way switch, The circuit below shows the basic concept of electricity flow to the load. Let's assume the load you are controlling is a light. The electricity flows from the hot wire (black) through the 2-way switch (shown in off position) and then to the light and returns through the neutral wire (white). This is a completed circuit.Wire an Outlet · 3-Way Switch · Switch Terminology · 4-Way Switch · Dimmer Switch · Thermostats 2 way switch wiring diagram | Light wiring Tags: 2 way switch wiring diagram, two way switch, two way switching 2 way switching (two wire control) I’ve included this method of 2 way switching for reference because you may come across it in old homes but I don’t recommend you use it.