Call me dumb, but I don't even know what you mean by an LED light (not one the would be used in a snake cage at least).

If possible... I'd reccommend using a black night light. I've been using one in a small 10 gallon, but when I get a new 36x24x12 cage I'm going to stick with this lighting. It supplies plenty of "dull/dark" allowing for easy viewing without bothering the snake (it's similar to moon light).

You can buy them at most reptile supply sites, just make sure the actual bulb can't be touched by your snake b/c they can get pretty hot.