Grease light box

LED lamp, with the logo of the movie Grease, all of us of a certain age know it well. It has an LED strip, with a small switch on the back and connected to a 5V transformer. There are two rear panels, one with a hole for the switch and another without a hole so as not to put a switch in it. The transformer connects to the lamp through a 5.5x2.1 female plug. It has an 8 mm hole prepared for the female plug.