I know its a shot in the dark, but does anyone have prints for a 3 stop Shepard Warner traction car. This thing uses the goofiest hall call wiring I have ever seen. Single push button at each floor. The actual call has three wires going to 3 separate studs on the button base, and another two that went to the in use light. When you push the button a triangular contact shorts all three together. All three have voltage on them when read to ground. We just installed extended surface mount hall fixtures on it and made it work by piggy backing two button contact blocks but I would still love some prints for this thing.