I finally had the opportunity to test the semaphore. The instructions for hooking up the wires were inadequate, and frankly erroneous. I had to get out an old instruction book for block signals, semaphores, etc in order to hook up the wires correctly. This is squarely on the manufacturer, Lionel. I realize that the product was made in China, but can't Lionel at least have someone knowledgable about the electronics write the instructions for hook up of wires?