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I mentioned this in another thread, but during my spring vessel safety check, the USCG rep recommended changing the entire fixture if you want to go to LEDs. While you can change the standard bulbs out for LED bulbs, replacing the fixture ensures you have a water tight unit, AND that the LEDs are properly matched with the filtering properties of the lenses themselves to provide the correct brightness and color for USCG spec. (He brought it up when he noticed that I had changed my stern white (bulb only) to LED and also the mast light (full replacement fitting with LED), but not my red/green nav lights.
Jason, any idea why the 2NM lights are cheaper?
MM
This is absolutely great advice. I often read people here swapping out just LED bulbs in NAV lights. Not a good idea for the before mentioned reasons.
I went with Attwood LEDs. They fit in essentially the same footprint as the Attwood fixtures many of the 2000s model Sea Rays have. I went with the 2nm lights for better visibility on my Sea Ray and Boston Whaler.
http://www.westmarine.com/buy/attwood--3500-series-led-navigation-lights--P009_277_001_530
They also have a Transom and Masthead LED Light
http://www.westmarine.com/buy/attwood--three-mile-led-lights--P009_277_001_535
I saw that they make the 1nm and the 2nm too.
Is this 2nm a bigger unit/housing entirely, or same size with a brighter led?
Definitely install a sealant. 3M 4000UV or 3M Marine Silicone. The silicone will be easier to deal with if you every have to get back in. Don't use 4200 or 5200. They are of similar build quality to the OEM Attwoods and other NAV lights I have seen. Plastic base and housing with a Chromed SS cover. You will have to re-drill the 2 screw holes. Make sure to seal the old holes good.
Thanks!
Did you seal the housing to the deck?
Or did you seal the SS cover to the plastic base?
Or both?