Chassis Ground on a Bigfoot truck camper????

GULFMAN wrote:
Hello all!!
I am trying to wire in a Victron BMV 712 battery monitor.

Sounds like the same question posted to one of my videos,

Here's my answer / explanation:

From an "electrical" standpoint, there isn't a chassis ground that acts as a current carrying conductor on a truck camper. There is a "safety ground" as you have found on the propane line. There's probably also a ground wire from the negative bus of the DC panel and the AC panel to the same "ground" point where the propane line is grounded. Ignore all of that.

A simpler way of describing the connections with the shunt and the battery bank is this:

Take all the wires off the battery negative that feed to the camper, connect them to the "load" side of the shunt. Take a new wire/cable and run it from the battery side of the shunt to the negative battery terminal.

There should only be one cable at the negative post of the battery - the cable that goes to the battery side of the shunt.

In a multi-battery system you'd also have a cable from one battery to the next.

The main key here is that everything that "was" connected to the B- (other than a battery interconnect cable in a multi battery system) is moved to the load (ground) side of the shunt and then a new cable is installed from the battery side of the shunt to the B- of your battery bank.