I thought this would be a great first post. Two years ago I swapped out most my bulbs for custom LEDs. I made all the lights
and put them in thier existing housing. LEDs used to go by 1 watt 2 watt etc etc.. They don't really go by that any more. Now it's all drive power.
My boat is moored in Boston Harbor and traveled over 800 miles and they still work flawlessly and they're about 3 times brighter than the previous bulbs and the LEDs you can buy as replacement bulbs.
Attached are some pictures. Basically, with a resistor, heatsink and LED it's tricky to get all the soldering and such down, but once you do, it really makes ahuge difference.
I just run a rebel star backed with a heatsink and an inline resistor going to each LED. They are drivin with 12v and reduced to 3.4 volts at the resistor. The 3 nav lights
work about 8 hours and use about .5 - .7volts.
To make them brighter you can get a bigger heatsink and use more juice, but you wont have to.
I can't post links because it's my first post. I'll be happy to email anyone the pictures.