I have 2 battery banks 1 house and 1 engine. I am trying to monitor the house bank. I have been unable to locate the shunt so that it will properly read both the charging and discharging amperage. The house bank is large 1,000 amp hours and split into two locations to facilitate short cable runs with large cables for bow and stern electric thrusters. Its changed by and inverter and or engine alternator. All negative cables (house and engine) run to a common buss (see picture). I need to capture the amperage draw out of the house bank from both locations and the charge from the inverter and or alternator as the case may be. I am confused about how to try and capture all this without rewiring the boat and splitting that buss.