No worries. I've plugged Mjödnir into a wall socket to light almost the whole area. And even beyond that, the most distant corners need no external lighting, as the posts themselves give off their own disturbing and unholy glow. #P
Take some advice from someone who's been into the Locker and returned: If you do find yourself in there somehow, treat the whole thing like the Ark of the Covenant. Gaze in wonder at the shipping manifests, but do NOT look at the contents. If you do, all rights you have re: your own face are null and void.