This is a heads up for some of you guys with older engines with the electronic horn installed. Many of these old engines have the circuit board mounted on an adhesive foam pad and I have found more often than not, the foam has turned to dust. This will allow the circuit board to contact the metal frame and short out resulting in a fried board. So if you have one of these and are thinking of running it, it might be a good idea to remove the shell and check it prior to powering it up. Some new foam or sticky back velcro will do the trick on insulating it from the frame. The circuit boards are still available from some parts vendors but it is probably a limited resource. Of course there is always the option of upgrading to a new rail sounds board.