I have some MTH PRR signals. It is set up so that when power is cut from one wire and applied to another it will go from all clear to stop. When power cut from the stop wire back to the all clear it will automatically show caution and then clear. I am looking for a simple to wire in electric circuit board that will essentially act like a relay that I can power off of track power and use an isolated rail to trigger. Anyone have a product that will work. I am sure someone has found something like this on ebay.
Original Post
