| Hi Steve,
I have used led's for my latest build. 3volt leds bought from ebay (cost 10pence each) running 4 in series off 12volt main battery. These are superbright and should work well for windows. For a picture of the boat 'lit up like christmas tree' visit my website, click Egrete in the nav menu, you'll find a pic at the bottom of the page.
Scottie | 
Linear Mode
