I have one on each window frame shining up to light the ceiling and one that shines down on the back deck. Even with all three on, they still have less electrical draw and more light than the Perko incandescent dome light that they replaced. Enough light so that I can sit on the back deck or in the V berth and read. Couldn't do that with the old light.

I have one on each window frame shining up to light the ceiling and one that shines down on the back deck. Even with all three on, they still have less electrical draw and more light than the Perko incandescent dome light that they replaced. Enough light so that I can sit on the back deck or in the V berth and read. Couldn't do that with the old light.