I designed an octagonal light base for the tower I made. Place the LED at a 45 degree angle and stick it. Pass the cable through the hole. Add an on/off switch. Use a 12 volt adapter. I added a cover so that the LED would not be exposed. I recommend that you print this in white. I also made a gasket so that the LED would not leak light. I think it would be better if you print the gasket in gray, of course the choice is yours.