All is working well, but I'm doing a bit of pre-Spring maintenance since it's sunny and 70º today—topping up my Group 29 with distilled water and cleaning up connections, etc. Anybody know what the three connections would typically be off of the coach battery positive wire, seen in the photo? One circuit breaker is 15A, the other two are 30A. I need to do more meter testing, but only one of them seems to terminate at the 12V panel inside. I assume that one is a charge wire from the Alternator... but what about the third?