Battery won't charge

People badmouth the OEM battery monitors, why, I don't know ! Any batt monitor beats nothing. If a battery monitor shows the batter voltage into the charging category, (above 13 volts) you can bet its charging !
But that's assuming the monitor reads zero when off. :( :)

OP, the readability of your post, sucks

Temporary "fix" for bad isolator. Mark and remove wires from wire to one battery's large lug and install it along with the other battery's lug. You have effectively bypassed the isolator.

If this doesn't work, you can combine alternator output and battery charge wire.

Of course my meter is at home.

I'm running off the gen right now. My battery status meter shows charging with the gen on is it truely charging?

You need a VOM aka volt meter. :)

See if you can find an electrical person with a meter who can help you.