Like burmese said, you might need something to control the temperature, either manually, such as a rheostat, or an automatic controller, such as a thermostat.
As for light.... well you need to show your corn that it is either night or day. You don't need to have specific enclosure lights (I don't) but I keep mine in the room where I usually stay, therefore the corns sleep when I wake up and vice versa.
Hope this helped a bit