Deck Light/Spreader Light Forespar® Model ML-1 is a deck light designed for optimum illumination of your deck. Engineered primarily for installation on the mast just below the spreaders, the ML-1 is easily mounted on other locations on masts and superstructure. The ML-Series molded polymer housing and wraparound apron is readily adaptable to any mast curvature. ML-1 & ML-2 lights feature a durable molded polymer housing assembly with a readily adaptable wraparound mounting apron to accommodate virtually any mast surface curvature. For 12V systems. Replacement bulbs are available from Forespar® and most marine dealers.