I like your minimalist design. It's real satisfying when the wires glow up! The mechanics you chose to represent are self-explanatory and intuitive especially for people that know how to make circuits, but unfortunately your implementation is too simple for my taste. I just searched for every disjoint wire and clicked it until it glowed. It also seems like only one orientation is accepted, so I might visually have the wire in the right spot but it is in fact upside down.