Using these cab lights is easy. First, find a suitable spot on your truck's cab where you want to install them. Since only 2 small screw holes and a 1/4″ round hole for the wire are needed, it won't be too difficult to make the holes. Then, use the screws provided in the kit to secure the lights in place. Connect the wiring harness to the appropriate power source on your truck. As for maintenance, keep the clear lenses clean by using a mild soap and water solution to wipe off dirt and grime. Avoid using abrasive materials that could scratch the lenses. Remember, this kit is designed for trucks that don't have OEM cab or clearance lights, so don't try to install it on a truck that already has such lights.