I got the bulbs from a company called "Aircraft Spruce" Google them on the web. Funnel was from "Ace Hardware" on the web.
Get the bulbs FIRST! If you try to find a funnel locally, make sure that the bulb will drop down into the funnel AT LEAST 1/2 to 1 inches. This allows room for the plastic bolts to hold the bulb in AND stops any light scatter / reflection shining down into the boat and getting into your eyes.
You got to cut a BIG hole in the hardhat for the funnel to fit. Don't worry it WILL work and you ain't gonna mess it up
I got the toggle switch and the nylon bolts from Lowes. Put a rubber boot on the switch, but I can't remember where I got it from
Can't find the nylon bolts? Just use 3 dabs of silicon to hold the bulb in. Easy to cut and peel out when you change the bulb.
Make sure you line up the flilment in the bulb this way ---------.
Good luck everybody, let me know how they turn out.