I'm not sure this is the right place for this question. Years ago I bought this accessory new in the box and put it away until I could build my layout. I have built the layout and installed the unit in the conventional mode. When I turn it on and place the car in the correct position the led comes on and I hear a click. Nothing else happens. Checking with Lionel they said it could be a lose wire or its jammed. If I return it they cannot guarantee that they can fix it. Does anyone have the wiring diagrams and or any idea what is wrong. Also, what I should be careful about when I take it apart.