Well to help on this, since there is another topic going I just replied to, which is about the gates not raising, well with what your mentioning here, look on the forum and contact STAN2004, he helped me on diagrams with knowing how to use relays and insulated rail to make a crossing gate work. If you look at this topic - you'll find STAN's reply being the 2nd one down from the top - https://ogrforum.ogaugerr.com/...04#77311805194143104 and also to help, here's another topic he replied to - https://ogrforum.ogaugerr.com/...es-and-signal?page=1 And to also help, here's a diagram he sent me early last year and I still had it saved.
