To wire a 4-pin rocker switch, first identify the terminal layout: typically, two terminals are for the power supply (input) and the other two are for the output to the device. Connect the positive wire from the power source to one of the input terminals, and then connect the other input terminal to the positive wire of your device. The remaining two terminals are used for the ground connection; connect the ground wire from the power source to one terminal and the ground wire of your device to the other terminal. Finally, ensure all connections are secure and insulated to prevent short circuits.
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