I agree with the others. There are plenty of sights out that are bright enough that I light is not needed. In fact, except for the blind situation, they can be detrimental. When it gets drak enough that you THINK you need a light to see your pins they can make them so bright that you can't see anything beyond the pin. Like having a light shined into your eyes.

Another thing I've found is that many of them use small, very expensive batteries. Try dishing out $3 each for batteries and most lights use about 3 of them. They don't last long if left on, and if you need to reach to turn the light on it's just extra movement that game can pick up on.

The other part is that if you get a good sight with extended or wrapped fibers it's usually long after ethical or legal hunting hours till you can't see those pins.

A big help is often to use a larger peep, if you use one, that allows more light through to your eyes.