I want to power a crossing gate with 2 different ITADS. Do I need to install a relay on each ITAD to make this work Or can I simply connect the no terminals of each ITAD to the crossing gate? I am running all my accesories on a single CW80 transformer and my track power from a seperate CW80. If I need relays to do this does anyone have a part number or know where I can go to find what I need. Thanks!