Ours is part Ford and part Evans installed by Thor. By noon time on the day of my OP Ford had chased it down to no power at the clutch. Ground was good, Freon was good and there was power through the pressure switch. After calls to Thor and between Thor and Ken Wilson Ford of Canton NC we had cold
dash A/C by 3 pm. A wire was missing between the pressure switch and the clutch on the compressor. Thor gave the Ford people suggestions and sent up to date wiring.
Our out of pocket was an over night at the KOA.
This is the second wiring issue I think reported on these forums.
Thor Forums
