How to Wire a Mini Toggle Switch

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Wire a mini toggle switch to control electronic circuits or devices.
Wire a mini toggle switch to control electronic circuits or devices. (Image: toggle switch image by Sergey Danilov from Fotolia.com)

There are many types of toggle switches, but the most commonly used design is a simple SPST switch, or On-Off switch. Activating the switch will make or break contact between the common terminal and other terminal or pole. The other most frequently used switch is the SPDT switch, or On-Off-On switch. This switch has a single common terminal and switches between the two other terminals. Flipping the switch from one position to another will cause the switch to make contact between the common terminal and the first terminal or the common terminal and the second terminal. Some SPDT switches also have a center off position.

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How to wire an SPST switch

Connect the source wire to one terminal. This wire will route the voltage or signal to the switch. Slide the signal wire through the terminal hole. Bend the wire back, securing it to the terminal. Solder the wire to the terminal.

Toggle switches can control multiple devices or circuits.
Toggle switches can control multiple devices or circuits. (Image: on/off swiitch image by Chris Roselli from Fotolia.com)

Connect the device wire to the other terminal. This wire will supply the voltage or signal from the switch to the device. Slide the wire through the terminal hole. Bend the wire back, securing it to the terminal. Solder the wire to the terminal.

Locate a position for the switch. Drill a 1/4 inch hole at the new location. Insert the switch in the hole and secure it with the nut and washer.

Wiring a SPDT switch

Connect the source wire to the center terminal. This wire will supply the voltage or signal from the source to the switch. Slide the signal wire through the terminal hole. Bend the wire back, securing it to the terminal. Solder the wire to the terminal.

The basic design of an SPDT, center off switch.
The basic design of an SPDT, center off switch. (Image: switch image by Clark Duffy from Fotolia.com)

Connect the first device wire to one terminal. This wire will supply the voltage or signal from the switch to the device or circuit. Slide the wire through the terminal hole. Bend the wire back, securing it to the terminal. Solder the wire to the terminal.

Connect the second wire to other open terminal. This wire will supply the voltage or signal from the switch to the device or circuit. Slide the wire through the terminal hole. Bend the wire back, securing it to the terminal. Solder the wire to the terminal.

Locate a position for the switch. Drill a 1/4 inch hole at the new location. Insert the switch in the hole and secure it with the nut and washer.

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