Abstract: A string light display box having a box shaped cross section for supporting string or tube bulb lighting in a predetermined place on a structure. The display box has a top wall, a bottom wall and a rear wall to enclose a plurality of light bulbs such as along a decorative string lighting. The rear wall has a wire keeper attached thereto with said wire keeper formed of two parallel extrusions extending perpendicularly from a back wall of the wire keeper. The parallel extrusions extending longitudinally along the display box forming a wire channel for accommodating wiring of the string lighting. The keeper having a slight ridge on an inner edge making the opening of the keeper narrower than the wire channel formed by the parallel extrusions to hold the wire of the string lighting in place. The wire keeper may be removably mountable upon a rear wall by way of a catch and a keeper slide with each said rear wall catch and said keeper slide extending from the rear wall of the display box.