OK, So I have figured out, and successfully added Power Locks to a bone stock cargo van. All doors, all locks, on a 2009 Van.
The 2009 is the first year of the modern interior, and (I believe) the onset of ford using a Smart Junction Box.
Here is what you are up against in the 2009:
Your Smart Junction Box Lacks the Relays to run the Locks (verified by taking mine apart). You need a replacement.
You need to add wiring from the SJB under dash connectors to the Passenger Side door. I suggest the whole dash harness.
You need to add wiring from the Passenger door to the 60/40 or slider, for operating the locks. This is a easy to install replacment of you harness.
You need door lock actuators.
You need door switches, and door panels that will house them
You need / can get a rear door lock switch. My van, curously, had wiring from the rear door lock swithces all the way to the Smart Junction Box. But only that rear door (WTF Ford).
Here is who I suggest you go about this, to save your self time and money. This is not how I did it.
1) Find a well equipped junkyard van, of a compatible year (I found a 2009 and was stooked). The dead giveaway is the backup sensors on a bumper and the smaller power mirrors switch on the drivers door.
2) From donner van : Pull the dash, and get the entire harness for the dash. Pulling the dash, using the service manual, is not that bad. I've done it. Also pull the Smart Junction Box that lies behind the parking brake.
3) From almost any van :
Pull full doors, or interior door panels (to get power lock switches) and pull the lock actuators from the doors. The brackets from the donor doors are riveted on. So either cut the rivets or order the dorman ones. Either way, you also want the connecting rods from inside the door. You can disconnect the ford solenoids from the bracket by prying the bracket open. Note that these solenoids have MULTIPLE mount points molded on them. When you re-unite the metal bracket with the plastic, find the right mount point. This tripped me up.
Pull the short harness that goes from the passenger foot well under the step to the back doors. This carries the speakers for the rear doors also. My van only had a "door ajar" set of wires, so my new harness has wires for the lock, speaker, and door ajar.
Then:
Using Forscan, download your Smart Junction Box configuration data. You can flash this to the new box. And, you will want to customize while in there.
Assembly is the reverse of disassembly.
Once the new SJB is in the vehicle, use the standard programming procedure (turning the key hokey-pokey) to program remotes. And boom, you can lock all 6 doors from one spot.
