Using this ignition switch harness is straightforward. First, make sure your cooktop is turned off and unplugged for safety. Locate the old switch harness and carefully remove it, following the wiring connections. Then, connect the new switch harness according to the original wiring pattern. Once connected, plug in your cooktop and test the ignition to ensure it's working properly. When it comes to maintenance, keep the switch harness clean and free from grease and debris. Regularly check the wiring for any signs of wear or damage. If you notice any issues like loose connections or frayed wires, replace the harness promptly. And always remember to follow basic safety rules when working with electrical appliances.