Abstract: A light tube assembly includes a light tube and a stabilizer which includes a tubular body with copper members that are slidably engaged with curved slots in a base. A core with terminal plates is received in the tubular body and two locking pin 51s extend through grooves in the tubular body and are removably inserted into the base. An end cap is rotatably connected to the core and is positioned at three positions. The three positions allow the user to replace the base, to replace the light tube and to secure the light tube respectively.