Do you have the Magnum Inverter/Charger and ME-RC remote panel? If so, it easily is integrated with the generator thru it's AGS module, purchased separately, of course.
If not, the Cummins module should work just fine...probably an easy install as well... you'll need a wiring run to the batteries so that it can pick up the Voltage levels, and one to a Temp sensor/Thermostat for the temperature sensing.
here's Onan's EC30 remote panel unit
Many coaches may already have the AGS module installed, yet don't necessarily come with a separate 'remote panel' to use with it, it would have manual controls right on the module itself.
We love our AGS, 'camping' wouldn't be the same without it!