So the green wire that was tapped off the running lights, was just that. There are alot of running lights on the trailer, and that's where the wire goes, it just took a shortcut thru the converter compartment.
So I don't see a single Fuse from the battery to the converter. (Weather finally broke so I could get her open and take some more pictures)
The breaker pictured is only for the 120V connection, and the two 7.5 fuse are for the two output circuits.
I really opened it up. I did find that I only have a single circuit connected, the 2nd circuit is just dead-ended behind the converter. Future expansion I guess? Maybe I could put a 12Volt fridge in the future if the Camper passes muster.
I've already decided to replace the GRP24 battery with a GRP27.
When I do that, Should I put a fuse in? On what Terminal? Every automotive install involving electronics has ALWAYS required a fuse near the battery, so that's what I'm basing this on. Maybe Campers are different.