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2017 - 2027 Ford F-250 Super Duty
Confirmed to Fit
2017 - 2027 Ford F-350 Super Duty
Confirmed to Fit
2017 - 2027 Ford F-350 Super Duty
Confirmed to Fit
2017 - 2027 Ford F-350 Super Duty
Confirmed to Fit
2017 - 2026 Ford F-450 Super Duty
Confirmed to Fit
2019 - 2026 Ford F-450 Super Duty
Confirmed to Fit
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Requires 2-1/8" hole saw for installation
Includes bolt isolator kit for aluminum truck beds #57007
Includes bolt isolator kit for aluminum truck beds #57007
Warranty: One-Year Limited Warranty
Installation Difficulty: Professional
Installation Time Exact (Minutes): 45
There is nothing like the luxury and power that go along with heavy-duty towing. 5th wheel RVs offer a deluxe, home-away-from-home experience unlike any other, while gooseneck trailers possess a strength that far surpasses most other trailer options. As with any trailer, however, 5th wheels and goosenecks must be equipped with the proper lighting and electrical systems, and tend to require even more complex connectors than a standard receiver-type trailer setup. Make things simple with a CURT 5th wheel / gooseneck extension harness. These wiring harnesses are designed to put an extra connector socket in the bed of your pickup truck while still retaining power to the rear connector socket mounted on your bumper. This is done by plugging into the back of the existing original equipment (OEM) harness and routing through the body of the truck to a hole in the truck bed, providing a connector that is ready to accommodate your 5th wheel or gooseneck trailer. This CURT extension harness is designed to work with 7-way RV blade connectors and comes in a length of 7'. It is compatible with certain years of the Ford F-150, F-250 Super Duty and F-350 Super Duty (see application to verify fitment). For trucks with an aluminum body, galvanic corrosion can become a problem when installing vehicle-to-trailer wiring without the appropriate protection. This kit includes isolators that allow you to install the wiring harness extension in an aluminum truck bed without having to worry about ruining the truck's finish. It includes four bolts for secure mounting and four plastic well nuts to isolate the fasteners from all aluminum surfaces.
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®.'
Experts available to answer your questions
Call 888-634-9494Rediscover "Us" Time | Tested. Proven. Safe. Towing Products
7 compatible vehicles
| Year | Make & Model | Style | Notes |
|---|---|---|---|
| 2015 - 2026 | Ford F-150 | — | Installation Location - Installation Time: 30-60 minutes |
| 2017 - 2027 | Ford F-250 Super Duty | — | Installation Location - Installation Time: 30-60 minutes |
| 2017 - 2027 | Ford F-350 Super Duty | Crew Cab Pickup · 4-Door | Installation Location - Installation Time: 30-60 minutes |
| 2017 - 2027 | Ford F-350 Super Duty | Extended Cab Pickup · 4-Door | Installation Location - Installation Time: 30-60 minutes |
| 2017 - 2027 | Ford F-350 Super Duty | Standard Cab Pickup · 2-Door | Installation Location - Installation Time: 30-60 minutes |
| 2017 - 2026 | Ford F-450 Super Duty | Crew Cab Pickup | Installation Location - Installation Time: 30-60 minutes |
| 2019 - 2026 | Ford F-450 Super Duty | Standard Cab Pickup | Installation Location - Installation Time: 30-60 minutes |
The CURT 7' Custom Wiring Extension Harness (Adds 7-Way RV Blade to Truck Bed, Packaged) Trailer Wiring Adapter Connector (Part #BKDK57008) fits 2015-2026 Ford F-150 models. The 2026 model year is the last year covered by this part number. For newer models, check for an updated version.
The CURT 7' Custom Wiring Extension Harness (Adds 7-Way RV Blade to Truck Bed, Packaged) Trailer Wiring Adapter Connector (Part #BKDK57008) fits the following vehicles: 2015-2026 Ford F-150; 2017-2026 Ford F-250 Super Duty; 2017-2026 Ford F-350 Super Duty; 2017-2026 Ford F-450 Super Duty. Always verify your specific year, make, and model before ordering.
Yes, the CURT 7' Custom Wiring Extension Harness (Adds 7-Way RV Blade to Truck Bed, Packaged) Trailer Wiring Adapter Connector (Part #BKDK57008) is designed to fit the 2015-2026 Ford F-150.
The CURT 7' Custom Wiring Extension Harness (Adds 7-Way RV Blade to Truck Bed, Packaged) Trailer Wiring Adapter Connector (Part #BKDK57008) Typical installation time is 30-60 minutes. Basic hand tools are typically all you need.
The CURT 57008 is a wiring extension harness designed to extend the reach of a factory 7-way trailer connector on trucks. It allows you to connect a trailer to your vehicle's existing hitch or bumper-mounted connector from a more convenient location on the vehicle body.
Yes, the 57008 is designed to work with factory 7-way trailer connectors mounted to the hitch or bumper at the rear of trucks. The extension harness connects between your vehicle's taillight wiring harness and the factory 7-way socket, extending the connector to a more accessible location on the vehicle body.
The manual does not specify compatibility with vehicles lacking a factory 7-way trailer connector. The 57008 is designed to extend an existing factory connector. Contact CURT Product Support at 877-287-8634 to confirm whether your vehicle has the required factory connector.
You will need: a drill, a 7/64" drill bit, a 2-1/8" hole saw, a metal file, a flathead screwdriver, and a Phillips screwdriver. These tools are required to drill mounting holes, smooth edges, and secure the connector to the vehicle.
The kit includes one extension harness with paired connectors, four self-tapping screws for mounting, and eight cable ties for securing the harness to the vehicle.
Yes. Step 1 requires you to locate the vehicle battery on the driver side under the hood and disconnect the negative battery terminal before beginning installation. You must reconnect it after testing is complete.
Locate a suitable mounting point on the driver side between the rear post and the wheel well. The harness must be routed to this location. Ensure the harness will not pinch or bind when the steering wheel is turned.
Locate the vehicle taillight wiring harness connector connected to the factory 7-way trailer connector at the rear of the vehicle. Carefully release the gray locking clip and gently pull the connector apart while holding down on the connector locking latch to separate them.
Position the paired extension harness ends between the separated connectors. Insert the longer of the paired connectors into the vehicle wiring harness connector, ensuring it is fully inserted with locking tabs in place. Insert the shorter paired connector into the rear of the factory 7-way socket, also ensuring full insertion and locking tabs. Return the gray locking clip to its original position.
Yes. You must drill a 2-1/8" hole in the vehicle sidewall to route the extension harness connector through, and four 7/64" holes to mount the 7-way socket to the vehicle. Before drilling, check for miscellaneous items hidden behind or under any surface to avoid damage and personal injury.
Drill a 2-1/8" hole in the desired location in the vehicle sidewall using a hole saw. After drilling, use a metal file to smooth the edges of the hole to prevent abrasion of the harness or connector.
The four mounting screw holes are 7/64" in diameter. Position the 7-way connector into the opening and use it as a template to drill these holes, then secure the connector using the provided self-tapping screws.
Yes. After drilling the 2-1/8" hole, use a metal file to smooth the edges of the hole. This prevents abrasion of the harness or connector as it passes through.
After drilling the 2-1/8" hole in the vehicle sidewall, route the extension harness connector up from under the body through the hole. Insert the harness connector into the rear of the provided 7-way socket, ensuring it is fully inserted with locking tabs in place.
Use the four provided self-tapping screws to secure the 7-way connector to the vehicle. The screw holes are drilled using the connector as a template (7/64" diameter holes). After securing the connector, use the eight provided cable ties to secure the extension harness cable to the vehicle.
Test for proper function by using a test light or connecting a properly wired trailer. Perform this test before reconnecting the negative battery terminal to ensure all connections are secure and functioning correctly.
The manual does not specify a weight or towing capacity rating for the 57008. However, you must not exceed the product rating or your tow vehicle's lamp load rating, whichever is lower. Contact CURT Product Support at 877-287-8634 for specific capacity information.
Before drilling, check for miscellaneous items that may be hidden behind or under any surface to avoid damage and personal injury. This is especially important when drilling the 2-1/8" hole in the vehicle sidewall and the four 7/64" mounting holes.
The harness must be routed to a suitable mounting point on the driver side between the rear post and the wheel well in a way that prevents pinching or binding when turning. Ensure the harness path is clear and does not interfere with steering or suspension movement.
The 57008 works with trucks that have a factory 7-way trailer connector mounted to the hitch or bumper. Contact CURT Product Support at 877-287-8634 to confirm your vehicle is compatible.
Yes. You must drill a 2-1/8" hole in the vehicle sidewall and four 7/64" mounting holes. Before drilling, check for hidden items behind surfaces to avoid damage.
Yes. Disconnect the negative battery terminal before installation and reconnect it after testing.
Test for proper function using a test light or by connecting a properly wired trailer before reconnecting the battery.
Do not exceed the product rating or your tow vehicle's lamp load rating, whichever is lower. Contact CURT Product Support at 877-287-8634 for specific capacity details.
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