Does anyone know a way to power the vent fan with solar? I was just in my RV at the storage lot...it is in the mid 90s outside but the inside of the coach was 101. I have two powered vent fans...I turned one on (so it could pull air from the other one). Both vent fans have Camco rain covers, so I leave them open all the time. Within a few minutes the temp had dropped 6 degrees. So, it seems if I could power the vent fan with solar, I could just leave it on while the unit is in storage. But I can't find anything that will work. Any ideas?