Hello, I'd like to add a BMV 712 monitor to my camper while I'm upgrading it to 2 12V lithium batteries and a solar suitcase connection in addition to the existing solar setup. I haven't been able to find a wiring diagram for this specific setup so I'd like to double-check.
Currently my battery has 1 positive wire and 3 negative wires connected to the battery terminals. I'm not sure what the 3 negative wires are, but I think they all need to be connected to the load side of the shunt. I'm planning to connect everything in this way. Any help is appreciated. Thank you.