Does anyone know if it's possible to direct the alternators' output to a high capacity battery isolator and then to the starter bank and the House/Electronics bank? This would produce a .6V lower alternator max charge rate by going through the isolator's diode. That would provide the reduced (desired) output for the AGM batteries in the House/Electronics battery bank. The reduction in the max. charge rate for the cranking battery bank could be corrected when the batteries are charged by the onboard battery chargers without going through the isolator. Will each alternator need a separate isolator, or can both alternator-charge-outputs be attached together to the isolator's charge-source-terminal?
If this works, it may be simpler than having my internally regulated alternators, converted to alternators with external regulators.