Using this indicator light is easy. First, find a 10mm hole in your equipment where you want to install it. Carefully insert the light into the hole. Then, connect the 20cm connecting leads with bare ends to the appropriate electrical connections. Make sure the power is off when doing this. Remember, this is a 240VAC neon indicator, so always handle it with care. When it comes to maintenance, keep the light clean. You can use a soft, dry cloth to wipe it. If you notice any damage or if the light stops working, it's best to replace it right away. With over 25 years of experience in supplying appliance parts, we're confident this product will serve you well.