Originally Posted by DancinCampers
My guess one goes to the inverter, the other to a solenoid controlled by a disconnect switch by the step well.
DancinCampers is probably right. There could be two or three hot leads running from the battery.
On ours one goes to the inverter and the other goes to a disconnect switch.
When you use the button to turn off the coach the disconnect switch is opened and signal is sent to the inverter to turn off.
To add a battery disconnect switch you will need to add a bus bar and a big switch.
I used a 600A BEP because in theory the inverter could pull 350A and the batter boost 250A but a 400A will probably do. If you use their pro install series you can make a very tight implementation.
2013 Winnebago Journey 36M DP. Full time since 2015. 1987 FJ60 Flat Towed, FAILING 2000W of GRAPE Solar
, 800AH LifeBlue
LiFePO4 batteries (excellent), SMI Toad Brakes.