You would have to leave the key in acc.postion and turn all draws off. I WOULD NOT PULL THE BATTERY CABLES AS YOU WILL LOSS ALL THE COMPUTER INFO. NOT GOOD. I belive most cars and trucks have a setup procedure for towing.There is a F150 Ford Forum where you may get some help on line if you search it sorry as I have been on it but don't remember the address. Good luck and have a great time.
Mike , Leslie and Heather and Maggie Canine Traveler
2001 34' Dutchstar, Ford ,Double Slide
2007 Honda CR-V Toad