First of all, is your motorhome's hitch rated for that weight?
Some motorhome hitches are rated as low as 3500 lbs.
have baseplate and towbar info on their web sites.
Ford or REMCO TOWING
can tell you if your truck is towable without modification.
The neutral tow switch mentioned above is not applicable to Ford pickups.
Hopefully, all you would have to do is place the transfer case in neutral, transmission in park, and ignition key turned 1 position to unlock the steering wheel if it locks with the key out.
The BRAKE BUDDY
is one of the best and easiest to install braking system.