When I finally get out of the house and can travel, I plan on using my Generac XL4000 gen set in the truck bed as mentioned in Hitchhikers link from a previous post. I see no need for running it while towing, so I will make up the 40' cable needed to connect the generator to the trailer via the normal imput arrangement.
I also plan to move the spare tire for the truck up into the bed or under the trailer and install a 40 gallon transfer flow tank were the spare tire goes. I'll feed the generator with a buzz pump running off the 12v circuit on the gen set. Still have to work out the details for the hook up. The XL4000 gen set uses very little gas at 1/2 load. During one of the hurricanes down here, my son in law used it for his house. He was getting 14 to 18 hrs of run time from a tank of fuel. Its electric start and has a shut off for low oil and one other thing.
I may install it in a vented and insulated tool box at bed rail height.
2001 Supercruizer, Cat Power &16 RAM 3500 Laramie, Dually, Bed Tank, Air Hitch, Air Bags, In cab controller
2008 Carriage, Carriage. IS, Disc Brakes, Bigfoot, , Full Timer Since 2011, CTC 17771