I have been wanting to do the same thing in my 312bhx. Several wires inside the front storage area. I need to get a wiring diagram to see if it is possible.
I have a 4000 watt commercial gen sitting in the garage waiting on the next hurricane.
An external exhaust pipe is available at Camping World.
My lighting is led so the only thing we need the gen for is the A/C.
Bryan & Susan
2013 XLR Thunderbolt 300X12 Toy Hauler
2013 Chev 2500HD Crew Cab, Duramax, Allison
Ret. US Army Aviator