Using these exterior spike lights is a breeze. First, find a suitable spot outdoors for installation. Remember, a licenced electrician has to do the installation. Just follow the instructions in the product box. When it comes to wiring, use circular cable in the junction to keep the IP rating. If you're doing parallel or single connections, grab an appropriate IP68 connector. The lights work with a voltage between 12 - 25V and have a G4 lamp holder for max. 20W halogen globes (you'll need to buy the globes separately). In terms of maintenance, keep an eye on the weather. These lights aren't great for harsh weather or heavy rainfall unless they're protected. If you're in an area like that, it's better to get IP65 fittings. And to make sure your warranty stays valid, always check that the IP rating of the product matches where you're using it.