Using this lid switch and harness is easy. First, make sure your washing machine is unplugged. Then, carefully remove the old switch and harness from your machine. Connect the new wiring harness to the main control board of your washing machine according to the original connection. Place the magnetic encapsulated reed switch in the proper position where it can detect the lid's opening and closing. Finally, plug in your washing machine and test it. When using, always ensure the power is off before making any changes to the switch or harness. If you notice any abnormal noises or malfunctions, stop using the machine immediately. For maintenance, keep the switch and harness clean. You can use a dry cloth to wipe them regularly. If you have any further questions, feel free to contact us.