Quote Originally Posted by the evil twin View Post
That will be pretty difficult to set up using single contact C/Bs.
If the batteries are in parallel, whatever fault condition trips one CB will trip both anyway.
Can you mount the C/B's so you can see the trip indicator?

You could try connecting only 1 meter with the meter +ve on one battery +ve and the meter -ve on the other battery +ve
If both CB's are closed the meter should read 0.0x.
If a C/B opens the voltage will drift from zeroish as the battery terminal voltages change.
-ve voltage if one CB opens, +ve if it is the other
These meters need the voltage they are measuring to make them work, they are 7.5 - 20 volt meters so 7.5 is the minimum needed.

If have have the right end of the pineapple, that means zero to 7.5 volts is no screen???

In the situation of both CB's tripping the accessories wont be working, so I think that is covered???