I just bought a 2013 Transit Connect and it came with the modified wiring option. Unfortunately, I can't find anything in the owners manual or online that explains where to find the end of the wires for the option. The best clue I can find is on page 11 in the Body Builders Layout Book, see:
https://www.fleet.ford.com/truckbbas/non-html/2013/2013_Transit_Connect_v1-0.pdf
If I read that diagram correctly, the under the hood pass through wires are taped to the wiring harness near s113. My guess is S113 is switch 113.
Also, the other end of the pass through wires plus the three fused wires are in the interior of the vehicle taped to the harness near C205. My guess is that C205, is connector 205.
The problem is I can't find anything that says where S113 and C205 are located on the vehicle. Does anyone on the forum have a factory wiring manual for a 2013 Transit Connect, (or just as good, I bet, would be a 2012 wiring manual) and can look up the names and locations of S113 and C205 and post what they are?.. any help would be much appreciated.