On my 06 TM T36, I have 3 sets of batteries:
Inverter - 4 x 6V - Located in front above the generator
Chassis - 2 x 12V - Located Driver side rear top rack
House - 2 x 12V - Located Driver side rear bottom rack
The inverter batteries are charged by either shore or generator (120V).
The chassis batteries are charged by the alternator from the motorhome only.
The house batteries are charged by the PD9180 converter. It converts from 120V to 12V. If you have the generator or shore power, it will provide power to the PD9180, thus charge the house batteries as well.
That is my understanding of how the system works.
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2006 Gulf Stream Tour Master T-36
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