centrally located per the illustration central control circuitry 12 is logistically located between a first bank 14 of elongated rectilinear shaped flexible circuit boards and a second bank 16 of elongated rectilinear shaped flexible circuit boards each bank a mirror image of the opposite bank an accordion cable 18 between eight and twelve inches long in a closed position and twelve to twenty inches in an open position couples the control circuitry 12 to an upper circuit board 20 of the first bank a second accordion cable 22 between one to four inches long in a closed position and three to nine inches in an open position couples the upper circuit board 20 to a lower circuit board 24 each circuit board contains a plurality of incandescent lamps 26 the preferred embodiment being eight incandescent lamps placed equidistantly along the length of each circuit board attention should be given to placement of the upper circuit board 20 in relation to the lower circuit board 24 in that each board resides on opposite sides of an articulating surface in this instance the elbow joint 28 the second bank 16 forms a mirror image of the first bank 14 by use of accordion cable 30 which.