I would not be without a light in mine!
It seems I am always out there in the dark fumbling.
I actually built mine with 3 lights, 2 on the exterior, and 1 inside the smoke chamber.
I used the lights that have the jar over the actual bulb.
I have yet to clean the jar off, and it is still providing great light.
You can see the outside 2 in this pic.
And here is a picture of the inside of the smokebox, before the roof went on.