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Warranty: One-Year Limited Warranty
Electrical System Type: 3W
Output Type: 4-Way Flat
Tail Light Circuits: 6.0 Amps
Turn and Brake Circuits: 3.0 Amps
Installation Difficulty: Professional
Installation Time Exact (Minutes): 45
If your vehicle is not equipped with wiring for towing a trailer, CURT custom wiring is the ideal solution. A custom wiring harness -- also called a T-connector -- is a simple, plug-and-play electrical device that plugs into your automotive electric system and provides a standard, universal trailer wiring connection. This is done using two or more vehicle-specific, OEM-compatible connectors to plug into the taillight assembly, eliminating the need for cutting, splicing and soldering during installation. Custom wiring harnesses are made vehicle-specific, and while they are not available for all vehicles, they do offer one of the fastest, easiest and most secure ways to wire a vehicle for towing. This particular plug-in harness provides a 4-way flat connector socket and is designed to be a custom wiring harness to fit certain years of the Ford Transit Connect (to verify your vehicle compatibility, see application info). It comes with all necessary wiring components to establish a reliable trailer wiring connection, as well as a dust cover to keep the connector clean when not in use. You have a picture in mind of your next destination -- maybe it's the boat landing at your favorite fishing spot, maybe it's a campsite that overlooks one of nature's masterpieces, or maybe it's the next big jobsite. However, turning that picture into a reality takes more than just daydreaming. It takes a solid connection and the right amount of power. CURT custom wiring is made with some of the most sophisticated technology in the industry and is designed to install with ease, giving you a long-lasting electrical connection for your towing hitch setup.

CURT offers a variety of high-quality trailer hitches and accessories for select vehicle models. Find the perfect fit for your towing needs at TowUniverse.
CURT, a Lippert brand, offers a complete line of towing products and is the leading manufacturer of custom-fit trailer hitches. We offer the broadest selection of custom-fit hitches, and each one is designed, welded, and coated in Wisconsin.
CURT is also a leader in flat towing products, as well as 5th wheel, gooseneck, and weight distribution hitches, ball mounts, electrical components, cargo solutions, and other towing accessories.
For everything from passenger cars and vans to full-size pickups and SUVs, CURT is 'The First Name in Towing Products®.'
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1 compatible vehicles
| Year | Make & Model | Notes |
|---|---|---|
| 2014 - 2023 | Ford Transit Connect | Installation Time: 30-60 minutes |
The CURT Custom Wiring Harness, 4-Way Flat Output, Select Ford Transit Connect Trailer Connector Kit (Part #BKDK56218) fits the following vehicles: 2014-2023 Ford Transit Connect. Always verify your specific year, make, and model before ordering.
Yes, the CURT Custom Wiring Harness, 4-Way Flat Output, Select Ford Transit Connect Trailer Connector Kit (Part #BKDK56218) is designed to fit the 2014-2023 Ford Transit Connect.
The CURT Custom Wiring Harness, 4-Way Flat Output, Select Ford Transit Connect Trailer Connector Kit (Part #BKDK56218) fits 2014-2023 Ford Transit Connect models. The 2023 model year is the last year covered by this part number. For newer models, check for an updated version.
The CURT Custom Wiring Harness, 4-Way Flat Output, Select Ford Transit Connect Trailer Connector Kit (Part #BKDK56218) Typical installation time is 30-60 minutes. Basic hand tools are typically all you need.
Yes, the Curt 56218 is designed for Ford Transit Connect vehicles (SUVs, Mini & Full-Sized Vans category). The harness connects to the vehicle's existing taillight wiring connectors on both driver and passenger sides.
The Curt 56218 has a maximum rating of 3.0 amps per side for signal circuits and 6.0 amps total for tail/running circuits. The battery connection must be fuse-protected with a 10-amp maximum fuse. Do not exceed the product rating or the tow vehicle lamp load rating, whichever is lower, as exceeding this can cause loss of warranty, overheating and potential fire.
Yes, you must disconnect the negative battery terminal before beginning installation. This is the first step in the installation process and is essential for safety.
You will need a Phillips screwdriver and a flat blade screwdriver. The manual also recommends having a test light or properly wired trailer available to test the harness for proper function after installation.
1. Remove the plastic access cover behind the rear cargo doors to locate the vehicle taillight wiring harness connectors. 2. Separate the connectors from the taillight housing, taking care not to damage the locking tabs. 3. Insert the custom wiring harness end (yellow wire for driver side, green wire for passenger side) between the separated connectors. 4. Ensure the connectors are fully inserted with locking tabs in place. Repeat this process on both the driver and passenger sides.
Locate a suitable grounding point near the taillight connector, such as an existing screw with nut in the vehicle frame. If no suitable point exists, drill a 3/32" pilot hole. The area must be free of rust, dirt and paint. Secure the white ground wire using the ring terminal and provided screw.
Drilling may be required for the ground wire connection. You may need to drill a 3/32" pilot hole if no suitable existing screw with nut is available in the vehicle frame near the taillight connector. Before drilling, check for miscellaneous items that may be hidden behind or under any surface to avoid damage and personal injury.
The black converter box is part of the Curt 56218 harness system. It should be adhered to a flat spot inside the vehicle near the taillight using the provided double-sided tape.
The black power wire from the vehicle battery should be routed according to the included CME-PCL-INS sheet, which provides detailed routing instructions. This sheet is included with the harness and must be consulted for proper battery connection and fuse installation.
When not in use, roll up the 4-flat connector and store it in a convenient, out-of-the-way location inside the trunk. When in use, route the 4-flat to the center of the vehicle and out of the trunk. Secure any loose wires with the provided cable ties.
Test the harness for proper function using a test light or by connecting a properly wired trailer. All installation steps must be followed to ensure the wiring harness functions properly before testing.
The battery connection must be fuse-protected with a maximum of 10 amps. Exceeding this rating can cause loss of warranty, overheating and potential fire.
Open the rear cargo doors and remove the scuff panel by pulling out on the bottom and then up. Take care not to damage the alignment tabs on the back. After routing the wiring harness and completing the taillight connections, reinstall the scuff panel.
Yes, after reinstalling all items removed during installation, reconnect the negative battery terminal. Also install the provided 4-flat dust cover to help prevent corrosion.
The Curt 56218 is designed for Ford Transit Connect vehicles.
You need a Phillips screwdriver and a flat blade screwdriver. A test light or properly wired trailer is also needed to test the harness after installation.
Yes, disconnect the negative battery terminal before starting installation.
Drilling may be required if no existing screw with nut is available in the vehicle frame. If needed, drill a 3/32" pilot hole. Always check for hidden items before drilling.
The battery connection must use a 10-amp maximum fuse. Do not exceed this rating or the product's amperage specifications (3.0 amps per side for signals, 6.0 amps total for tail/running).
Signal circuits: 3.0 amps per side. Tail/running circuits: 6.0 amps total. Battery connection: 10-amp maximum fuse. Do not exceed these ratings or the tow vehicle lamp load rating.
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