Installing lights into your ceiling can be a tricky task. But follow these five simple steps and you'll be able to do it with ease. .1. Remove the light fixture from its position in the ceiling.2. Unscrew the base of the light fixture and disconnect any wires connected to it (it helps to be cautious about this step).3. Place one wire from your new light fixture into a screw terminal on the power grid of your ceiling, then connect the other wire of your new light fixture to that screw terminal.4. Screw the base of your new light fixture into the grid.5. Connect any wires that were disconnected in step 2 and replace the light fixture back in the ceiling, replacing all screws and connecting wires as necessary.