Electrical Issue No A/C one circuit dead Fleetwood Terry 26

I would take your meter set to DC voltage (solid line with dotted line under it symbol) Measure from the top red wire in the center to the any of the steel around the fuses. If you get 12 volts then measure from the little holes (slots) in the back of each fuse (2 holes per fuse measure both holes) to the metal. If you get 12 volt on one hole and 0 volt on the second hole then the fuse is blown.