Forgot to mention, I will be ordering the controller and will report more after it is installed.
Ford Tow Module USA GN1Z-19H332-A
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.
https://parts.autonationfordwhitebearlake.com/oem-parts/ford-module-trailer-brake-gn1z19h332a
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).
https://parts.autonationfordwhitebearlake.com/oem-parts/ford-wire-gn1z13a576a
https://www.walmart.com/ip/Hopkins-Towing-Solutions-4-Flat-Extension-18-Inch-Wire-48185/16889050
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.
https://parts.autonationfordwhitebearlake.com/oem-parts/ford-module-trailer-brake-gn1z19h332a
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).
https://parts.autonationfordwhitebearlake.com/oem-parts/ford-wire-gn1z13a576a
https://www.walmart.com/ip/Hopkins-Towing-Solutions-4-Flat-Extension-18-Inch-Wire-48185/16889050
Attachments
1 - 20 of 26 Posts
The module arrived and it was a simple install. The module goes under the driver side passenger seat. The carpet is pre-cut and will need to be snipped in a few spots to mount the module. You will need 4 8mm nuts and washers to mount the module. The plugs are taped to the harness. Cut tape and insert into module. You are finished and can lower the rear seat.
My trailer harness from Ford was wired wrong. See last two photos. Fortunately the body harness has a dummy connector housing with plugs to prevent mud and road grime from cruding up the body harness plug. I was able to remove the wires from the trailer harness by cutting and breaking the trailer harness connector housing. You can then plug the wires into the dummy connector housing after removing the plugs from the 4 openings. Make sure to match the wire colors to the body harness. Then you need to add the flat 4 wire trailer harness to the Ford trailer harness to complete the install.
It is plug n play and uses the CAN bus to activate the turn signals, park and stop lights. No cutting nor crimping to the tail light wires in the rear nor running a 12vdc wire from the battery.
![Technology Electronics Circuit component Electronic component Electronic device]()
![Vehicle Car Family car Ford fiesta Car seat cover]()
![Auto part]()
![Wire Technology Electronic device Electronics Auto part]()
![Wire Electrical wiring Technology Cable Electronic device]()
My trailer harness from Ford was wired wrong. See last two photos. Fortunately the body harness has a dummy connector housing with plugs to prevent mud and road grime from cruding up the body harness plug. I was able to remove the wires from the trailer harness by cutting and breaking the trailer harness connector housing. You can then plug the wires into the dummy connector housing after removing the plugs from the 4 openings. Make sure to match the wire colors to the body harness. Then you need to add the flat 4 wire trailer harness to the Ford trailer harness to complete the install.
It is plug n play and uses the CAN bus to activate the turn signals, park and stop lights. No cutting nor crimping to the tail light wires in the rear nor running a 12vdc wire from the battery.
The when the trailer harness is body harness, the colors do not match.
Body---------------Trailer
Harness-----------Harness
Green--------------Black
Yellow--------------Brown
Brown--------------Yellow
Black----------------Green
See photo.
I had to correct the color code so the lights on the trailer would work correctly and have the correct wire size for each circuit.
![151]()
Body---------------Trailer
Harness-----------Harness
Green--------------Black
Yellow--------------Brown
Brown--------------Yellow
Black----------------Green
See photo.
I had to correct the color code so the lights on the trailer would work correctly and have the correct wire size for each circuit.
GN1Z13A576A Is the correct part number for the trailer to body harness.
on eBay
on eBay
New Genuine Ford Wiring Asy GN1Z13A576A / GN1Z-13A576-A OEM | eBay
Find many great new & used options and get the best deals for New Genuine Ford Wiring Asy GN1Z13A576A / GN1Z-13A576-A OEM at the best online prices at eBay! Free shipping for many products!
www.ebay.com
Hello and thank you for this explanation. I just bought a 2020 EcoSport SES and installed the Curt hitch about an hour ago. I can figure most of this out from your breakdown but what I don't see is what wire harness GN1Z-13A576-A plugs into. I see from your post that the flat 4 connector is spliced on the other end, so does this harness (image below) plug into the lead that is under the rear bumper??? Thank you!
![193]()
1 - 20 of 26 Posts
