- 1). Decide what kind of switch you want to install. All switches operate on the same principle--they interrupt the flow of current from a source to the device that's using it. However, you will have to select a switch that suits your needs. For example, there is a big difference in the size and shape of a wall switch for your house, and a toggle switch for driving lights in your car. If necessary, talk to an electrician or a knowledgeable employee at an electrical supply or electronics shop for additional advice.
- 2). Decide on a location for the switch. Then determine whether or not you'll need extra wiring to do the job, or if the switch can simply be installed within the existing wiring configuration.
- 3). Cut off the power to switch you are wiring. If you're installing a switch into new wiring this may not be necessary. Prepare the wiring by cutting and stripping the wiring as necessary for the installation of the switch. Follow the instructions that came with the switch, if you purchased it new. Once the switch has been installed, restart the power and test the switch. Do this before you fully complete the switch installation, in case it's necessary to redo any connections to the switch. If the switch tests out OK, cut the power again, and complete the installation.
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