I just got another idea - an easy to use mechanic system! If the player could place some kind of switch and place a source of light, and connect them on a channel system, whereas the very first channel is named Channel 1 or just 1, and place them on two or multiple sources of light. That system could apply to all if mechanisms became an abroad system. Just a thought
Edit: What about ingame weather, too? Excuse me if there already is, I cannot play the game but most gladly will make suggestions.