We have an 09 Ambassador. I've noticed that when we're driving, the house batteries show (on the Magnum control panel) that they are being charged by the alternator. That's great. But the chassis batteries do not get charged when connected to shore power.
I my way of thinking, I always thought the house and chassis batteries were separated, like it was in my old Winnebago. Neither side charged the other. That's also the way our 08 Knight worked, even though the owner's manual said that each side charges both sides. The owner's manual for our Ambassador says the same thing but so far, I've only seen the alternator charge the house batteries, and it's not consistent.
I guess what really bugs me is the owner's manual stating one thing, and the systems operating differently. What else in the owner's manual is wrong?
There's a discussion on a battery isolator but it don't seem to work that way. Would like to hear from others. Were the coaches incorrectly built or are the installed systems just plain faulty or unreliable?
Would just like to know what the real story is here.