Most RV's that claim to be "SOLAR READY" only have a plug on the outside of the RV that leads to the battery. Most do not have a controller and many have wire that is not heavy enough to avoid a voltage drop between the panel(s) and the battery. You also must check the polarity on the plug to make sure you don't damage equipment or blow fuses.
Bob & Dawn Married 34 years
2017 Viking 17RD
2011 Ford F150 3.5L Ecoboost 420 lb/ft
Retired