Thanks for all the advise. I don't have a great spot to work on it at my place, so I'm going to bring it over to my dad's place and we're going to look it over tonight.
It seems to me my battery should be able to last more than one night of dry camping, but it might be that. We did use the furnace, but the battery was fully charged before we left. The power inverter may be an issue also.
I was thinking the LED lights must be more sensitive to current because the small incandescent bulb above the stove would still light yet a bit dim compared to normal.
We got by, but I'll have to figure it out before this summer. I'll need to buy an LED lantern or two and be more frugal with my power consumption. I have a Mr Heater I could use instead of my furnace. I'm also thinking about buying a small gas generator to keep the battery charged.
I'll update after I look at the trailer tonight.
Thanks,
Jeff