Using this switch is a breeze. First, make sure your power is turned off to avoid any electrical shock. Then, align the switch with the cut - out size of 22mm X 29mm in your appliance. Connect the 6.4mm spade terminals to the appropriate wires. Once connected, turn the power back on and test the switch. As for maintenance, keep it clean from dust and debris. If you notice any signs of wear or the red neon indicator stops working, don't try to repair it yourself. Instead, contact a professional electrician. Always remember to follow basic electrical safety rules when handling this switch.