Is there a smarter way to check continuity on a three cluster rocket than to check each igniter separately? Also, is there a way to know if there is a short? I want to be able to ignite three low power motors reliably & these issues have caused several failures. I also had a problem with insufficient current which I fixed by using a relay. So what I'm looking for is a fail safe circuit to check continuity and detect shorts on a three cluster rocket after I have all of the igniters connected to the relay. Ideally a Green LED means the rocket is ready to fly and a Red LED means there's a short or a lack of continuity & will prevent ignition if triggered by the relay.