I made up two #6 cables that allow me to shut off power to all the chassis 12 systems if I so desire. The bottom switch in normal operation is closed and feeds power from the battery to the chassis functions. If it is open, then the coach chassis system is de-energized and there are no phantom draws on power such as computers, etc. The top switch has the lead for the house batteries attached to it. That switch is normally open. When it is closed it interconnects the house and chassis systems should it be needed.
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