I have been looking at all kinds of articles and videos on 3way wiring, but they don’t look the same as mine. It is for a patio light. One switch is in family room in a 3 gang box and the other is in the master bath. Now from everything I have seen, both boxes should have 2 14/4 coming into them. We’ll the m. Bath only has one 14/4. This is were I am getting stumped. Any help appreciated.