I dont see any wires going to or from it....its pretty big and you can stick your arm down in it and theres a hole on the bottom going to somewhere that I cant see.Once you take the cowling off theres another black square covering this box...when you take that off you can see down in there....I have no idea what it does but that little black square is cracked in half and I have been getting water in my car when it rains and I was trying to figure out if it came form there.