SLO,
Like Kary stated that is probably misinformation. We have a 2015 and I have been all over this rig and I have not discovered anything that would come close to solar wiring. We do have a residential frig and have a 1000 watt inverter for it when on the road. Someone may have thought if it had an inverter it was wired for solar. This 1000 watt inverter would not supply enough power for the frig and other things like hair dryer, microwave, tv and the list goes on.
I will be installing solar soon. Just have to purchase the 6 AGM batteries and get home to start the install.