I would think as long as you have the plenum controls then all it needs is 110VAC. Since the AC unit will have 3 wires with exposed ends you just need to figure out a SAFE way to hook them up to that extension cord.
2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.
Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.