All of the electrical bits for the upgrade. The system provides a 12V / 120V system when it is plugged into shore power on a plug on the side, or when it is plugged into a 120V rechargeable battery pack ("solar generator") inside the kitchen area. Eventually, I may add a battery, so I installed a full panel with a battery charger. There will be 12V and 120V plugs inside, and in the kitchen, and wiring to power a MaxxFan, and (eventually) a built in Bluetooth receiver.