The diagram below represents the schematic diagram for a spst rocker switch. The switch is always making one of the two connections and flips between them.

Toggle Switch Wiring
Spst toggle switch wiring diagram. Terminal 1 is connected to one load or accessory terminal 3 is connected to another load or accessory. An example circuit of a spst toggle switch is shown below. Terminal 2 is connected to power. It makes one of two connections. Pin 1 is where the rocker switch receives the input power. The other terminal is for the output.
This wiring diagram applies to several switches with the only difference being the color of the lights. When closed current can flow and power the load. A wiring diagram is a streamlined standard photographic depiction of an electrical circuit. Spst toggle switches function as simple on off switches. A spdt is a bit more sophisticated. Perhaps the most common rocker switch on the planet the v1d1 b60b is a spst standard on off rocker switch.
Pin 3 is where the switch is either connected to ground or left open. It shows the elements of the circuit as simplified forms and also the power and also signal links between the tools. When open they disconnect the circuit so that current cannot flow to the load. Here is an example of how a spst might be wired to power a light. Below is the wiring schematic diagram for connecting a spst toggle switch. 1 terminal is for the input.
Variety of spdt toggle switch wiring diagram. Here is a diagram of a spdt toggle switch. Pin 2 is where the accessory that the switch is going to turn on is connected. You can see that a spst toggle switch only has 2 terminals. Terminal 1 is connected to one load or accessory terminal 3 is connected to another load or accessory. Here is a diagram of a spdt toggle switch.
Spdt toggle switch single position dual throw xx. Shown can be a 6 for white c for red or x for blue.