Installing Tow/Trailer Hitch Wiring Harness

Hello all,

I have spent over 8 hours reading through the various threads on this forum and elsewhere online and have come to an impasse attempting to add OEM trailer brakes to my 2017 Transit 250 High Roof that did not come with anything on it. I have a level 1 cluster (trip, odo, miles left, two-color).

I have bought a harness kit that ran back from the tow bar to the front of rig, hooked up the box in the wheel well (trailer brake module ?), installed a 4 wire harness (blue wire to under the van blue wire, white to A-pillar ground, green to pin 68 and red straight to the battery). Installed a new ground wire from the 4 wire connector on the trailer brake module to the negative of the battery, I have went into Forscan and activated trailer brake and set it to 13 pos.

What works: All the lights on my trailer work as they should (brakes, hazards, left, right, running lamps). I don't have a backup light on the trailer so can't test that.

What does not work: Trailer brakes.

I am attempting to use a 2008-2010 F250 super duty trailer brake controller with this setup, similar to what someone else tried but then gave up on (i am stubborn lol). I am convinced that even if i had the correct brake controller it would not work because i think i am missing some wires in my harness.
My harness came with two pieces that connect into each other with the C2142 connector. Each side of the harness only had 4 wires and were labeled as below:

• Blue (Brakes) - To Trailer Brakes
• Red (Power) - Power from battery
• Green (Com cable/can bus?) - Purple Stop Lamp
• White (Ground) - Black/Blue Ground

The trailer brake controller connector that would plugin to a 2008-2010 F250 has the following pin out:
2 - Canbus High speed High
3 - Canbus High speed Low
4 - CTRL MOD sensor pressure brake fluid
5 - Sensor pressure brake fluid
6 - CTRL MOD sensor pressure brake fluid
8 - Fuse 5 or circuit breaker (which in the fuse box is Trailer Brake Controller at 30 amps)
10 - Relay - Stop Lamp
11 - Ground
12 - Fuse 33 or circuit breaker (which in the fuse box is Backup Lamp Relay at 20 amps)
14 - CTRL MOD Trailer Tow Brakes

The trailer brake controller connector that would plugin to a 2017 Transit 250 has the following pin out:
2 - Canbus High Speed High
3 - Canbus High Speed Low
8 - Fuse 9 or circuit breaker (which in the fuse box is Trailer Brake Module fuse at 30 amps)
11 - Ground
12 - Fuse 31 or circuit breaker (which in the fuse box is Trailer Brake Ignition Feed fuse at 10 amps)
14 - CTRL MOD Trailer Tow Brakes
(rest of pins all say unused)

I tried matching power, ground, brakes and canbus low pins from one side to the other with no luck.

Question for this thread is:

What wires am i missing and where should i pull them from to plug into the Trailer Brake Controller ?
Have i mis-wired something ?

This being my first post i doubt ill be able to post link or photos so i made a google photos album that anyone can see at the following link: photos.app.goo.gl/QwDsdPW4KGSVh3T37

Hi, I have a 2022 Transit and I'm trying to figure out how to add a tow hitch and wiring as close to OEM as possible. My local dealer said they don't install hitches and sent me off to a local aftermarket shop. I'm willing to do the install myself if that's what it takes to get OEM parts. I'm thinking of ordering this harness (15A416) and this hitch (19D520) but I can't confirm whether they will work.

I understand that at least pre-2015, a lot of wiring is missing from the factory unless you order certain options... was that changed after 2015?

Can be Dealer Installed only if connectors C431 and C495 exist *
* Vehicles built prior to 1/28/15 may not have connectors C431 and C495. These are the connections for the TRM jumper and the 4-Pin/7-Pin trailer connector jumper. The absence of these connectors indicates the vehicle’s wire harness does not have the required lighting circuits between the TRM jumper and the 4-Pin/7-Pin trailer connector jumper. See figures on the following page.

I really don't want to order the parts and then find out I don't have the right connectors to plug it all in.

Thanks!