Thanks for all the replies!
DrewE wrote:
The heated mirror switch is pretty common. Leaving it on will run down your chassis battery before too long (if the engine is not running), assuming it's wired hot as is not uncommonly done.
The switch above the sink may be for the water pump or the water heater. It also might be for a bunch of other things.
I realize that I have a switch for starting the genny above the driver's seat as well as in the back near the microwave. Next to that switch is water heater and water pump. But it could be a redundant switch, I guess.
mkirsch wrote:
click-click-click-click is a bad battery connection, usually ground because it's the one you can see, and it "looks fine" so you don't actually pull it apart and clean it.
MEXICOWANDERER wrote:
Reach for battery cleaning brush before reaching for wallet...
Clean all battery connections thoroughly. Hopefully there are no bolt together emergency battery terminals.
Then when you think you're done - you aren't. Follow the negative battery cables where they attach to the chassis frame, unbolt them, and make bright the cable leg and what they bolt to. Smear grease atop to stop corrosion.
Charge batteries, then wait and see.
Do you still need your wallet?
I come back to "Why does it not start after sitting one week? And why does it resume normal starting after being driven awhile?" Corrosion, loose connection, ok...I can imagine that causing a problem, sure. And it's a cheap fix if it works, part of routine maintenance. But why is it intermittent like that?
One other factor might be at play: the weather. I live in Texas and you may have seen we've been getting a lot of rain. Mind you I don't live in South Texas, where they're getting flooded---I live in North Texas, hours away from that (Dallas). Still, we have had some heavy rain and maybe the moisture is the straw that broke the camel's back when it comes to a failing electrical connection.
