A lighting assembly includes a base plate having a longitudinal axis and a pair of linear edges equidistantly spaced therefrom. The linear edges extend parallel to the axis and along a longitudinal length of the plate. The linear edges are provided with a flange portion formed therewith and extending along a length thereof. The flange portions terminate at a predetermined distance above a top surface of the plate. Light fixtures are adjustably positional along the plate, and each of the fixtures has an LED housed therein. Slots are formed within the plate, and each of the slots has first, second, third and fourth segments aligned along offset quadrants. A mechanism slides the light fixtures within the slots and another mechanism locks the light fixtures within corresponding ones of the slots. A mechanism under mounts the linear edges to a bottom surface of a support.