Make alternator charge house battery better

RV daytrader wrote:
Would this charge house battery better? Run a new heavy alternator wire to house battery first and use existing wire that goes from chassis battery to isolator to converter to house battery to charge the chassis battery ? This is in my class C.

Sorry, do not understand. There is no (or at least should be no) converter involved.

Simplest way: Use a marine simple ON-OFF switch. Wire alternator output and chassis battery cable to one lug and house battery to the other. Switch ON means both batteries get full charge with no loss from a diode-based isolator and no potential failure of a solenoid-based isolator. Switch OFF means battery banks are separated, and while driving, the house battery will not get a charge (great choice if driving from CG with shore power to CG with shore power. Why spend gasoline to "over-charge" the house batteries all day??