Originally Posted by RPR
It has the wiring for the panels to the inside and that’s it.
X2. If you are lucky, the wires are installed, installed correctly, labeled, and placed where they can be found. The installer needs to wire in the controller and verify it's connections, it's not plug and play. On our 5er, even the "Solar on the Side" connection for a portable panel is simply a SAE plug with loose wires hanging off the back. "Solar Ready" seems a bit optimistic to me, "partially solar ready" is more realistic.