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Verify Fitment
Select your vehicle to confirm this part fits.
1999 - 2018 Chevrolet Silverado 1500
Confirmed to Fit
2007 Chevrolet Silverado 1500 Classic
Confirmed to Fit
2001 - 2003, 2005 - 2006 Chevrolet Silverado 1500 HD
Confirmed to Fit
2007 Chevrolet Silverado 1500 HD Classic
Confirmed to Fit
2019 Chevrolet Silverado 1500 LD
Confirmed to Fit
1999 - 2004 Chevrolet Silverado 2500
Confirmed to Fit
2001 - 2019 Chevrolet Silverado 2500 HD
Confirmed to Fit
2007 Chevrolet Silverado 2500 HD Classic
Confirmed to Fit
2001 - 2006 Chevrolet Silverado 3500
Confirmed to Fit
2007 Chevrolet Silverado 3500 Classic
Confirmed to Fit
2007 - 2019 Chevrolet Silverado 3500 HD
Confirmed to Fit
1999 - 2016 Ford F-250 Super Duty
Confirmed to Fit
1999 - 2027 Ford F-350 Super Duty
Confirmed to Fit
1999 - 2027 Ford F-350 Super Duty
Confirmed to Fit
1999 - 2016 Ford F-350 Super Duty
Confirmed to Fit
1999 - 2016 Ford F-350 Super Duty
Confirmed to Fit
1999 - 2016 Ford F-350 Super Duty
Confirmed to Fit
1999 - 2026 Ford F-450 Super Duty
Confirmed to Fit
1999 - 2026 Ford F-550 Super Duty
Confirmed to Fit
2001 - 2003, 2005 - 2006 GMC Sierra 1500 HD
Confirmed to Fit
2007 GMC Sierra 1500 HD Classic
Confirmed to Fit
2001 - 2019 GMC Sierra 2500 HD
Confirmed to Fit
2007 GMC Sierra 2500 HD Classic
Confirmed to Fit
2007 - 2019 GMC Sierra 3500 HD
Confirmed to Fit
2004 - 2015, 2017 - 2024 Nissan Titan
Confirmed to Fit








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Always the correct part
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Requires 2-1/8" hole saw for installation
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 a certain models of Chevrolet, Dodge, Ford, GMC, Nissan, Ram and Toyota (see application to verify fitment). When you need a towing electrical solution that allows you to switch back and forth between your receiver hitch and specialized trailer hitch, CURT gets you plugged in.

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
44 compatible vehicles
| Year | Make & Model | Style | Notes |
|---|---|---|---|
| 1999 - 2018 | Chevrolet Silverado 1500 | — | Installation Location - Installation Time: 30-60 minutes |
| 2007 | Chevrolet Silverado 1500 Classic | — | Installation Location - Installation Time: 30-60 minutes |
| 2001 - 2003, 2005 - 2006 | Chevrolet Silverado 1500 HD | — | Installation Location - Installation Time: 30-60 minutes |
| 2007 | Chevrolet Silverado 1500 HD Classic | — | Installation Location - Installation Time: 30-60 minutes |
| 2019 | Chevrolet Silverado 1500 LD | — | Installation Location - Installation Time: 30-60 minutes |
| 1999 - 2004 | Chevrolet Silverado 2500 | — | Installation Location - Installation Time: 30-60 minutes |
| 2001 - 2019 | Chevrolet Silverado 2500 HD | — | Installation Location - Installation Time: 30-60 minutes |
| 2007 | Chevrolet Silverado 2500 HD Classic | — | Installation Location - Installation Time: 30-60 minutes |
| 2001 - 2006 | Chevrolet Silverado 3500 | — | Installation Location - Installation Time: 30-60 minutes |
| 2007 | Chevrolet Silverado 3500 Classic | — | Installation Location - Installation Time: 30-60 minutes |
| 2007 - 2019 | Chevrolet Silverado 3500 HD | — | Installation Location - Installation Time: 30-60 minutes |
| 2009 - 2010 | Dodge Ram 1500 | — | Installation Location - Installation Time: 30-60 minutes |
| 2010 | Dodge Ram 2500 | — | Installation Location - Installation Time: 30-60 minutes |
| 2010 | Dodge Ram 3500 | — | Installation Location - Installation Time: 30-60 minutes |
| 1997 - 2014 | Ford F-150 | — | Installation Location - Installation Time: 30-60 minutes |
| 2004 | Ford F-150 Heritage | — | Installation Location - Installation Time: 30-60 minutes |
| 1997 - 1999 | Ford F-250 | — | Installation Location - Installation Time: 30-60 minutes |
| 1997 | Ford F-250 HD | — | Installation Location - Installation Time: 30-60 minutes |
| 1999 - 2016 | Ford F-250 Super Duty | — | Installation Location - Installation Time: 30-60 minutes |
| 1999 - 2027 | Ford F-350 Super Duty | Cab & Chassis · 2-Door | Installation Location - Installation Time: 30-60 minutes |
| 1999 - 2027 | Ford F-350 Super Duty | Cab & Chassis · 4-Door | Installation Location - Installation Time: 30-60 minutes |
| 1999 - 2016 | Ford F-350 Super Duty | Crew Cab Pickup · 4-Door | Installation Location - Installation Time: 30-60 minutes |
| 1999 - 2016 | Ford F-350 Super Duty | Extended Cab Pickup · 4-Door | Installation Location - Installation Time: 30-60 minutes |
| 1999 - 2016 | Ford F-350 Super Duty | Standard Cab Pickup · 2-Door | Installation Location - Installation Time: 30-60 minutes |
| 1999 - 2026 | Ford F-450 Super Duty | — | Installation Location - Installation Time: 30-60 minutes |
Yes, the CURT 7' Custom Wiring Extension Harness (Part #BKDK56070) is designed to fit the 1999-2018 Chevrolet Silverado 1500, so your 2009 is covered. This harness uses a simple plug-and-play design that routes a 7-way RV blade socket into your truck bed while keeping your rear bumper socket functional.
The CURT 7' Custom Wiring Extension Harness (Part #BKDK56070) fits 1999-2018 Chevrolet Silverado 1500 models, so unfortunately your 2026 won't be compatible with this specific part number. You'll need to check for an updated version that covers the newer body style.
The CURT 7' Custom Wiring Extension Harness (Part #BKDK56070) fits select Chevrolet, Dodge, Ford, GMC, Nissan, Ram, and Toyota trucks including: 1999-2018 Chevrolet Silverado 1500; 2007 Chevrolet Silverado 1500 Classic; 2001-2006 Chevrolet Silverado 1500 HD; 2007 Chevrolet Silverado 1500 HD Classic; 2019 Chevrolet Silverado 1500 LD; 1999-2004 Chevrolet Silverado 2500; 2001-2019 Chevrolet Silverado 2500 HD; 2007 Chevrolet Silverado 2500 HD Classic; 2001-2006 Chevrolet Silverado 3500; 2007 Chevrolet Silverado 3500 Classic; 2007-2019 Chevrolet Silverado 3500 HD; 2009-2010 Dodge Ram 1500; 2010 Dodge Ram 2500; 2010 Dodge Ram 3500; 1997-2014 Ford F-150; 2004 Ford F-150 Heritage; 1997-1999 Ford F-250; 1997 Ford F-250 HD; 1999-2016 Ford F-250 Super Duty; 1999-2026 Ford F-350 Super Duty; 1999-2026 Ford F-450 Super Duty; 1999-2026 Ford F-550 Super Duty; 1999-2018 GMC Sierra 1500; 2007 GMC Sierra 1500 Classic; 2001-2006 GMC Sierra 1500 HD; 2007 GMC Sierra 1500 HD Classic; 2019 GMC Sierra 1500 Limited; 1999-2004 GMC Sierra 2500; 2001-2019 GMC Sierra 2500 HD; 2007 GMC Sierra 2500 HD Classic; 2001-2006 GMC Sierra 3500; 2007 GMC Sierra 3500 Classic; 2007-2019 GMC Sierra 3500 HD; 2004-2024 Nissan Titan; 2016-2024 Nissan TITAN XD; 2011-2026 Ram 1500; 2019-2024 Ram 1500 Classic; 2011-2026 Ram 2500; 2011-2026 Ram 3500; 2010-2026 Toyota Tundra. Always verify your specific year, make, and model before ordering to ensure proper fitment.
This harness is rated for professional installation and typically takes about 45 minutes to complete. You'll need a 2-1/8" hole saw to cut the mounting hole in your truck bed, but the wiring itself is plug-and-play with no cutting or splicing required. The 7-foot length and right-angle plug make routing through the truck body much easier.
Yes, CURT 56070 is compatible with Dodge Ram 1500 (including 2500 and 3500 models). It mounts behind the driver side rear bumper. If your truck has an aluminum body bed, you will also need CURT# 57007 isolator kit to prevent corrosion.
Yes, CURT 56070 is compatible with all Ford F-150 variants listed: F-150, F-150 new body style, F-150 Heritage, and F-250. It mounts behind the driver side rear bumper. If your truck has an aluminum body bed, you will also need CURT# 57007 isolator kit.
CURT 56070 is designed for Chevrolet Silverado, Dodge Ram 1500/2500/3500, Dodge Dakota, Ford F-150 (all body styles), F-250, F-250/F-350/F-450/F-550 Super Duty, GMC Sierra, Nissan Titan/Titan XD, Toyota Tundra, and Ram 1500/2500/3500. All installations mount behind the driver side rear bumper.
Yes. If you are installing CURT 56070 in an aluminum body truck bed, you must use CURT# 57007 isolator kit to prevent corrosion of the aluminum body.
You will need: a drill, 2 1/8" hole saw, 7/64" drill bit, metal file, flat blade screwdriver, and Phillips screwdriver.
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.
Carefully release the gray locking clip on the 7-way connector. While holding down on the connector locking latch, gently pull the connector apart to separate it from the vehicle wiring harness.
Insert the longer of the paired connectors into the vehicle wiring harness connector. Make sure it is fully inserted with locking tabs in place.
Insert the shorter of the paired connectors into the rear of the factory 7-way socket. Make sure it is fully inserted with locking tabs in place. Return the locking clip to its original position.
Locate a suitable mounting point on the driver's side between the rear post and the wheel well and route the harness to this location. Be sure the harness will not pinch or bind when turning.
Using a hole saw, drill a 2 1/8" hole in the sidewall at your chosen mounting location. After drilling, use a metal file to smooth the edges of the hole to prevent abrasion of the harness or connector.
Using the connector as a template, drill four 7/64" mounting screw holes in the sidewall. Secure the connector using the provided self-tapping screws.
Yes. Installation requires drilling a 2 1/8" hole in the truck sidewall for the harness to pass through, and four 7/64" holes for mounting screws. You must use a hole saw, drill bit, and metal file to smooth the edges.
Before drilling, check for miscellaneous items that may be hidden behind or under any surface to avoid damage and personal injury.
Do not exceed the product rating or tow vehicle lamp load rating, whichever is lower. The specific product rating is not provided in the manual; contact CURT Manufacturing for this specification.
Test for proper function by using a test light or connecting a properly wired trailer. This should be done after the connector is mounted and before reconnecting the battery terminal.
Secure the extension harness cable to the vehicle using the cable ties provided with the kit.
CURT 56070 fits Chevrolet Silverado, Dodge Ram/Dakota, Ford F-150/F-250/Super Duty, GMC Sierra, Nissan Titan, Toyota Tundra, and Ram trucks. If you have an aluminum bed, you also need CURT# 57007 isolator kit.
Yes, disconnect the negative battery terminal before starting installation.
Yes. You must drill a 2 1/8" hole for the harness and four 7/64" holes for mounting screws in the truck sidewall.
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