07-22-2014, 12:16 PM
I just verified that my 1992 does NOT have a separate isolator. Checking the Owners Manual confirms my earlier statement that, at least on my 1992,:
"A solenoid automatically merges the two 12 volt systems when the ignition key is on except while operating the starter. Therefore, both the chassis battery system and the house battery system are charged automatically from the engine alternator while the coach is driven.
The house battery system is also charged by a converter/charger located in the back of the shoreline compartment any time 120 volt power is available (generator or shoreline). To charge the chassis battery system from the converter/charger or to get extra battery power for engine starting, the two battery systems must be manually merged using a switch on the dashboard labeled "battery merge." This switch has two "on" positions, either up or down, so that it has power to function even is one battery system is dead."
1992 Newell Owner's Manual
"A solenoid automatically merges the two 12 volt systems when the ignition key is on except while operating the starter. Therefore, both the chassis battery system and the house battery system are charged automatically from the engine alternator while the coach is driven.
The house battery system is also charged by a converter/charger located in the back of the shoreline compartment any time 120 volt power is available (generator or shoreline). To charge the chassis battery system from the converter/charger or to get extra battery power for engine starting, the two battery systems must be manually merged using a switch on the dashboard labeled "battery merge." This switch has two "on" positions, either up or down, so that it has power to function even is one battery system is dead."
1992 Newell Owner's Manual