1991 Viking 180. 75ah deep cycle AGM battery made for UPS applications. I don't know a ton about wiring but I'm learning. I have just purchased a starter solar kit, starting small with a single 100W panel and 30A controller (with breaker between converter and battery and fuse between panel and controller). I have a (rarely used) inverter that I wire directly to the battery, because it doesn't work very well connected through the converter. I'm also considering rewiring to be able to charge from the TV when towing. My question is: should I run all these through a junction box before I connect to the battery? Are there potential problems having the PUP DC, solar, inverter, and TV charge wires all connected directly to the battery terminals at the same time?