I started with something similar to this for the housing: http://www.westmarine.com/buy/power-pro--4-led-courtesy-light-surface-mount-with-chrome-case-red-led--17030297?recordNum=106
The one I have is all white plastic, similar but I think a different manufacturer. I removed the original LEDs, replaced them with wide angle RED leds and used silicon to waterproof it again. http://www.ebay.ca/itm/50-pcs-3mm-Flat-top-Red-LED-Wide-Angle-Flat-Head-Light-lamp-New-Free-Shipping-/180973391516?hash=item2a22dace9c:g:JbsAAOxy7odRzv9~ It has its own supply wire that runs from the cockpit switch for the binnacle compass ( C&C 30-1 ). Not required but I removed the red tape from the Windex and replaced it with 3M red reflective tape. At night it stands out well but does not interfere with night vision or look like an incorrect navigation light from a couple of hundred feet away. Michael Brown Windburn C&C 30-1
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