Update: Okay...I'm learning.
I did find out a few things and the picture is starting to get a little clearer. Thanks all those for your help/suggestions.
I did learn that at least one of the 6V batteries was bad. I've decided to ditch the two 6V batteries that were wired in parallel with my 12V house battery. I will instead use three 12V brand new deep cycle batteries to start fresh and have them all matching (same capacity, same age). Will give me ~315ah which seems okay for the time being.
I had my RV plugged into shore power (at my house). Running the AC, etc all just fine. Then I put it back at the storage site yesterday. I was working on a few things on it today at the storage site and I turned on the generator. When I did, I noticed that I didn't have 110v outlet power and my appliances and roof AC weren't working. After much thought and investigation, I remembered that I had been plugged into shore power and I never plugged the 30amp line back into the plug (inverter?) in the electrical compartment. Once I did, I had 110v power and the appliances worked. Then I thought to check my house battery to see if it was charging and low and behold it was charging (as it should be!). So now it looks like my generator will in fact be charging the house batteries as it should be. It is possible that previously with the bad battery it was causing the low voltage readout making me think that the generator wasn't doing its job (...or perhaps I never had the 30amp line plugged in as it should be).
Question: If I am running the generator or if I am plugged in to shore power, is the battery charging exactly the same? Same rate and charging amperage? As I'm learning, it seems to me that regardless of whether the generator is running or the shore power is hooked up I *think* it's the same internal battery charger charging the house batteries, right? Let me know
I am still not seeing a charge on the house batteries when I am running the chassis engine. I traced the wires coming off the chassis battery and I think I can see a relay/isolator buried behind some items in the engine compartment. I think I'm going to leave this up to a mechanic (...unless someone can suggest an easy way to test/replace this component).
Thanks!
