I worked at Gottlieb in the 1970s. Stood on that assembly line amongst tons of multicolored wires with my wire cutter in hand, and created harnesses. I worked in the coin box/slot section. I remember three components mainly, coin slot, play board, light box. I remember making pinballs for overseas use. Rarely saw a complete system, as that was another part of the factory. Thanks for a run down memory lane.