shuttle 12 until such time as sufficient pressure is applied to enable the ball to retract into the shuttle 12 thereby allowing the shuttle 12 to move freely between the initial point and the light source aperture 24 the light source aperture 24 is positioned in relation to the shuttle 12 to enable passage of the control gear assembly 34 and the light source 42 through the barrier 50 it is significant to note that the present invention is effective in maintaining a smaller light source aperture 24 because the control gear assembly 34 does not have to be accessed from behind the barrier 50 rather the control gear assembly 34 is shuttled over barrier 50 to the light source aperture 24 the smaller light source aperture 24 eliminates the need for a larger unsightly trim ring to cover a large light source aperture in the ceiling yet all required codes and standards for accessibility of internal electrical components and connections behind the barrier 50 are met with the smaller light source aperture 24 in some embodiments the control gear assembly 34 detachably joins within the slot 26 in the shuttle 12 and has a substantially rectangular shape which is sized and dimensioned to fit inside the slot 26 formed in the shuttle 12 the control gear assembly 34 is held into place chiefly.