I have used Hitlights to order my LEDs. Use a SMD5050 waterproof coolwhite LED for best results. You can use the high density if you want a ton of light, regular density is good. I used the regular. Most of the LED manufacturers have people there to help you with the extras you will need - wire, connectors etc. Remember, if you order waterproof, you need to remove the silicone covering over the LED's. You can use a utility knife to cut down to the strip. You can go as crazy as you want with the design - switches, alligator clips are all acceptable.