This maybe a stupid question but why not. How many out there run a generator while running down the road and if so how do you run the cord if the generator in the truck bed and the plug is at the back of the FW or did you have another plug put in up front?
Yes - (run the gen in the pickup bed) if desired.
Yes - another "plug" up front. Serves several purposes, besides the gen.
See the (my) - *connection options* from discussion about the 50amp cord.
It's a variation of a schematic posted many years ago by Ken Lenger
for his on-board gen & manual transfer switch.
BTW - The rack in back.
Unless it's for a slide in camper (no bed space available), IMO - the gen on the "rack in back" is your *substitute bumper*...:(
But - whatever rings *your* chimes!..;)
and mine is stronger than the stock make believe bumper :B
Another option is to add a cargo rack on the back end of your FW and mount a gen-box back there. Usually a much shorter run for the cord and not (usually) necessary for another plug.
This is what I did and works great.