Thanks again, my journey into model railroading is certainly upping my knowledge of relays and circuitrty. I am quite fond of railroad signalling and use both MTH and Lionel ITAD's as they look good and are simple. Having said that I have had a couple of the Lionel one's fail over the years for unknown reasons (they just start to do some wierd random clicking thing and dont work as they originally did?). Any other options besides MTH and Lionel for these? Preferences?
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