no time to climb. ok maybe tomorrow...

added one of these in the small cooler

so solar panels charge the battery via the controller on the bottom right wall. battery powers the pump (added a swicth just out of view on the right) as well as a 200W inverter. plug from the inverter is wired into a weather proof wall mount plug on the outside (not pictured).
just gotta insulate the pipes and seal the wood!