Using these MR16 garden spike lights is easy. First, make sure you have a licensed electrician install them according to the instructions in the box. Connect the lights to a power source within the 12 - 25V AC/DC range and use an external control gear. When connecting the cables, use circular cable in the junction to keep the IP65 rating. For parallel or single connections, pick an appropriate IP68 connector. To keep the lights in good shape, check the IP rating regularly to ensure it's suitable for your use. Also, since globes are not included, you'll need to get the right ones that fit the MR16 lamp holder and don't exceed 20W. With a 2 - year replacement warranty, you can have peace of mind.