Using these MR16 garden spike spot lights is easy. First, make sure you have a licensed electrician install them as required. Connect the external control gear and choose the appropriate cable according to the connection type - circular cable for junctions and an IP68 connector for parallel and single connections. Place the spike in your garden, and you're ready to enjoy the illumination. When it comes to maintenance, since they have an IP65 rating, they can withstand some dust and water. But avoid submerging them in water. Check the lights regularly to ensure they're working properly. If there are any issues within the 2 - year warranty period, you can get a replacement.