[Rettaray]

I have found an isolator relay type switch in the house battery compartment. It has a 12v source to one side with a cable dangling that has a female connector. The other side has a 12v source with a cable dangle with a male connector that will connect the female thereby bypassing this relay. The relay clicks when I switch on the ignition. Could it be I found my aux switch in for of plugging the cables together. I can plug them and all seems fine. How can I check to see if this is couple house and coach together?