Welcome to the forum!
Here are some guesses from someone who does not own a Basecamp . . .
"No" on the gen needed, if you have true 12-volt outlets. A generator supplies 120 volts. Your 12-volt outlets, if any, would look like the old-fashioned cigarette lighter outlets, and should be powered by the battery just fine. Check the owner's manual on this, and to confirm that you do indeed have true 12-volt outlets. Also on how to reset your 12-volt circuit breakers. If you can pull the 12-volt outlets out from the wall, see if there are any loose or missing connections on the back connection points. You might have to pull the 12-volt distribution panel out to see if there are missing/loose connections back there too.
However -- are you sure outlets are actually 12-volt outlets, like the old "cigarette lighter" outlets? I did not think the BC had any. Yes, you might have some USB outlets, but those only receive a USB plug for charging phones etc.
PS -- The AS BC specs call out only USB and 110 pop-up outlets:
Any chance you ordered optional 12-volt outlets?
PS2 -- The following quote seems to indicate that the pop-up outlets are only for 110 volts, AND that the USB outlets only work on shore power IMO:
[click on arrow in quote to go to that post in the other thread]
Originally Posted by Bborzell
My original question was grounded in what the dealer told us about the electrical wiring. That was that the 110 stalks in the front counter and the usb ports contained in the stalks were wired for shore power only. They said that all of the other usp ports were similarly dedicated for shore power only.
My interest is in being able to charge phones and iPads while dry camping. It doesn't make much sense, in my opinion, to advertise a trailer as designed for dry camping while restricting 12V
charge ports to shore power.
I will call Airstream on Monday.
I have posted in that thread, asking for a reply here on your questions. Good luck.
This thread may also be helpful:
Lastly you might want to check out the Basecamp forum regarding other issues: