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Thank you to Larry and Pcfabs. I have trailer lights! I was pretty nervous about breaking into the connector case on the harness, but I went at it slow and was able to get it. I've never done anything like that so I didn't know what to watch for or what to expect. Once I got the first wire out it was all good though. Then I knew what to do. Getting the wires in the dummy connector was quite tedious to say the least. I finally managed though.

It's a shame that Ford screwed up the wiring on that harness because it would be a much easier job. I get why they don't put the module and harness on every EcoSport, because the overwhelming majority of people won't ever put on a hitch. So there's a lot of expense involved with putting in parts that would go unused. But for those of us who do want to tow, get the wiring right on the harness!

And as has been mentioned, with this module and this harness there is no flashing required.
 

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I ordered the trailer tow module and wiring harness that Larry said were needed to get the trailer lights working and can confirm what he says. I put them in this weekend and everything worked out fine. My new wiring harness was also wired incorrectly when I received it. The wires are reversed on the new harness as compared to the vehicle wires. To correct this I found that you do not have to break apart the connector on the new wiring harness. Simply look into the connector on the new wiring harness and you will see a white plastic insert. Using a pair of very small needle nose plyers grab the center of it and pull it out. Look inside the connector under the area where the white plastic insert was and you will find a very small black plastic finger lock tab that is holding in each of the wire terminals. You may need a bright light and a magnifying glass to see them. Use a small jewelers screwdriver to gently lift up the black finger lock tab and at the same time remove the wire terminal by pulling out from the back of the connector the wire for that terminal. Do this for each of the wires and reinstall them in the correct order by simply pushing the terminal back into the connector until you feel and hear the click indicating that the terminal is locked in. Reinstall the white plastic insert.
 

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After much searching, I have finally found the Ford part number for the trailer tow module under the driver's side rear passenger seat. This module completes the trailer tow prep package installed in our cars come from the factory. The module should be plug and play with no programming.



The part number is GN1Z-19H332-A. You can go to the Ford Parts website and see photos of the module.


Ford Parts | Buy Parts for Ford, Lincoln & Mercury Cars & Trucks | FordParts.com


You maybe can view it without creating an account. If not, create an account and enter the above part number.


AutoNations - White Bear Lake Ford lists the price - $83.28. You might can get your local Ford Dealer Parts to sell it for same or similar price.



Module - Trailer Brake GN1Z-19H332-A | Auto Nation Ford White Bear Lake


To complete the wiring from the plug located under the left rear corner of the rear bumper, you will need this harness, part number - GN1Z-13A576-A. It plugs into the car wiring harness but does not have the trailer connector. You will need to graft on a flat 4 wire plug to this harness. Wal Mart sells the Hopkins Towing Solutions 4 Flat Extension 18 Inch Wire, 48185 for $4.95 (lots cheaper than your local auto parts store).


2018-2021 Ford EcoSport Wire GN1Z-13A576-A | Auto Nation Ford White Bear Lake


https://www.walmart.com/ip/Hopkins-Towing-Solutions-4-Flat-Extension-18-Inch-Wire-48185/16889050
Larry, you are a lifesaver. Thank you. Trailer wiring complete.
 
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