Mega-Light Masthead Mega-Light Masthead comes mounted to a stainless bracket for easy installation to a masthead, interior wall or bulkhead. Draws just 0.11 amp with built-in light sensor for automatic switching. Use as a masthead light to mark your boat on a mooring or at anchor, nighttime security light or a marker light to light stairways and entryways. Comes with 12" (30 cm) lead wire. On-off switch and fuse holder for hard-wire installation not included.Features: Automatic switching - on at dusk/off at dawn Two easy-change bulbs for super low current draw (0.11 amp) or extra brightness (.320 amp) Visible up to 2 nautical miles (3.7 km) Includes mounting hole for use with Windex 15 mounting base Stainless steel bracket with (6) #10 holes and two key-way slots provides multiple installation options