So we're talking the rooftop A/C unit that cools the house part of the coach (not the engine driven "dash air"), right?
OK, does this A/C have a wall thermostat to control it, or only two knobs on the unit itself, at the ceiling?
What's Make/Model of the A/C?
Usually, everything 120 Volts AC, running off that cord that got cut, is protected by Circuit Breakers, not glass fuses. Newer coaches use plug-in automotive plastic fuses for the 12 Volts DC stuff like lights. Older ones used glass fuses, but again not for 120 VAC stuff. See if you can find your "Load Center" which may be Breakers and Fuses in two separate devices/locations, or combined. Post pictures!
