These parts make it possible to use the LEDs to actually light up the figure inside the case rather than just the outer edges of the plexiglas. The mod requires you to remove a small amount of plastic from the front corners of the inner platform with a Dremel tool and drill holes through to the bottom side where the corners were cut out. The parts glue into the triangular slots you create and you must rewire new LEDs into the parts before gluing. You can connect the wires directly to the existing switch and power supply.