10' Custom Wiring Extension Harnesses (Adds 7-Way RV Blade to Truck Bed, 10-Pk) #56000010
- 10' extension with right-angle plugs for easy installation
- Routes a 7-way RV blade socket into truck bed while retaining use of rear socket
- Spring-loaded dust cover keeps connector clean when not in use
- 10' Custom Wiring Extension Harnesses (Adds 7-Way RV Blade to Truck Bed, 10-Pack)
- 7-way connects tail, brake, reverse, turn signals, brakes and auxiliary power
- Allows for easy connection of 5th wheel or gooseneck wiring
- Slit loom keeps wires contained and well protected
- Simple plug-and-play design eliminates the need for cutting or splicing
Notes:
- Includes 10 extension harnesses per package
- Requires 2-1/8" hole saw for installation
Guides & Install Sheets
Product Videos
PRODUCT SPECIFICATIONS
- ColorBlack
- Electrical Package TypeBulk
Hub Warehouse D25- Installation DifficultyAdvanced
- Master Case Qty0
- MaterialBlank
- Pallet Qty0.000
- Parcel AllowedYes
- Part Type*
- Shipping Weight26.000
- WarrantyOne-Year Limited Warranty

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 or trailer hitch. 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.
These CURT extension harnesses are designed to work with 7-way RV blade connectors and come with 10' of wire. Ten harnesses are included in each package. They are compatible with certain models of Chevrolet, Dodge, Ford, GMC, Nissan, Ram and Toyota (to verify your vehicle compatibility, see the CURT application guide at curtmfg.com). 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.
YEAR | MAKE | MODEL | STYLE |
---|---|---|---|
2001 | Ford | F-350 Super Duty | Cab & Chassis with 34 In. Frame |
2000 | Ford | F-350 Super Duty | Cab & Chassis with 34 In. Frame |
1999 | Ford | F-350 Super Duty | Cab & Chassis with 34 In. Frame |
2002 | Ford | F-350 Super Duty | Cab & Chassis with 34 In. Frame |
2003 | Ford | F-350 Super Duty | Cab & Chassis with 34 In. Frame |
2004 | Ford | F-350 Super Duty | Cab & Chassis with 34 In. Frame |
2006 | Ford | F-350 Super Duty | Cab & Chassis with 34 In. Frame |
2007 | Ford | F-350 Super Duty | Cab & Chassis with 34 In. Frame |
2008 | Ford | F-350 Super Duty | Cab & Chassis with 34 In. Frame |
2005 | Ford | F-350 Super Duty | Cab & Chassis with 34 In. Frame |
2011 | Ford | F-350 Super Duty | Cab & Chassis with 34 In. Frame |
2012 | Ford | F-350 Super Duty | Cab & Chassis with 34 In. Frame |
2013 | Ford | F-350 Super Duty | Cab & Chassis with 34 In. Frame |
2014 | Ford | F-350 Super Duty | Cab & Chassis with 34 In. Frame |
2010 | Ford | F-350 Super Duty | Cab & Chassis with 34 In. Frame |
2016 | Ford | F-350 Super Duty | Cab & Chassis with 34 In. Frame |
2017 | Ford | F-350 Super Duty | Cab & Chassis with 34 In. Frame |
2018 | Ford | F-350 Super Duty | Cab & Chassis with 34 In. Frame |
2009 | Ford | F-350 Super Duty | Cab & Chassis with 34 In. Frame |
2020 | Ford | F-350 Super Duty | Cab & Chassis with 34 In. Frame |
2021 | Ford | F-350 Super Duty | Cab & Chassis with 34 In. Frame |
2015 | Ford | F-350 Super Duty | Cab & Chassis with 34 In. Frame |
2019 | Ford | F-350 Super Duty | Cab & Chassis with 34 In. Frame |
2020 | Ford | F-450 Super Duty | Cab & Chassis with 34 In. Frame |
2016 | Ford | F-450 Super Duty | Cab & Chassis with 34 In. Frame |
2015 | Ford | F-450 Super Duty | Cab & Chassis with 34 In. Frame |
2021 | Ford | F-450 Super Duty | Cab & Chassis with 34 In. Frame |
2001 | Ford | F-450 Super Duty | Cab & Chassis with 34 In. Frame |
2006 | Ford | F-450 Super Duty | Cab & Chassis with 34 In. Frame |
2007 | Ford | F-450 Super Duty | Cab & Chassis with 34 In. Frame |
2008 | Ford | F-450 Super Duty | Cab & Chassis with 34 In. Frame |
2019 | Ford | F-450 Super Duty | Cab & Chassis with 34 In. Frame |
2000 | Ford | F-450 Super Duty | Cab & Chassis with 34 In. Frame |
1999 | Ford | F-450 Super Duty | Cab & Chassis with 34 In. Frame |
2002 | Ford | F-450 Super Duty | Cab & Chassis with 34 In. Frame |
2004 | Ford | F-450 Super Duty | Cab & Chassis with 34 In. Frame |
2005 | Ford | F-450 Super Duty | Cab & Chassis with 34 In. Frame |
2009 | Ford | F-450 Super Duty | Cab & Chassis with 34 In. Frame |
2010 | Ford | F-450 Super Duty | Cab & Chassis with 34 In. Frame |
2011 | Ford | F-450 Super Duty | Cab & Chassis with 34 In. Frame |
2012 | Ford | F-450 Super Duty | Cab & Chassis with 34 In. Frame |
2013 | Ford | F-450 Super Duty | Cab & Chassis with 34 In. Frame |
2014 | Ford | F-450 Super Duty | Cab & Chassis with 34 In. Frame |
2003 | Ford | F-450 Super Duty | Cab & Chassis with 34 In. Frame |
2017 | Ford | F-450 Super Duty | Cab & Chassis with 34 In. Frame |
2018 | Ford | F-450 Super Duty | Cab & Chassis with 34 In. Frame |
2021 | Ram | 1500 Classic | All |
2020 | Ram | 1500 Classic | All |
2022 | Ford | F-350 Super Duty | Cab & Chassis with 34 In. Frame |
2023 | Ford | F-350 Super Duty | Cab & Chassis with 34 In. Frame |
2022 | Ford | F-450 Super Duty | Cab & Chassis with 34 In. Frame |
2009 | Ford | F-450 Super Duty | Excluding Cab & Chassis |
2010 | Ford | F-450 Super Duty | Excluding Cab & Chassis |
2023 | Ford | F-450 Super Duty | Cab & Chassis with 34 In. Frame |
2008 | Ford | F-450 Super Duty | Excluding Cab & Chassis |
2011 | Ford | F-450 Super Duty | Excluding Cab & Chassis |
2012 | Ford | F-450 Super Duty | Excluding Cab & Chassis |
2013 | Ford | F-450 Super Duty | Excluding Cab & Chassis |
2014 | Ford | F-450 Super Duty | Excluding Cab & Chassis |
2016 | Ford | F-450 Super Duty | Excluding Cab & Chassis |
2015 | Ford | F-450 Super Duty | Excluding Cab & Chassis |
2022 | Ram | 3500 | All |
2022 | Ram | 1500 Classic | All |
2018 | Ram | 3500 | All |
2019 | Ram | 3500 | All |
2020 | Ram | 3500 | All |
2021 | Ram | 3500 | All |
2023 | Ram | 1500 Classic | All |
2023 | Ram | 3500 | All |
2011 | Ram | 3500 | All |
2012 | Ram | 3500 | All |
2013 | Ram | 3500 | All |
2015 | Ram | 3500 | All |
2014 | Ram | 3500 | All |
2016 | Ram | 3500 | All |
2017 | Ram | 3500 | All |
2019 | Ram | 1500 Classic | All |
2018 | Nissan | TITAN XD | All |
2016 | Nissan | TITAN XD | All |
2019 | Nissan | TITAN XD | All |
2017 | Nissan | TITAN XD | All |
2021 | Nissan | TITAN XD | All |
2023 | Nissan | TITAN XD | All |
2020 | Nissan | TITAN XD | All |
2022 | Nissan | TITAN XD | All |
2012 | Ram | 1500 | All |
2013 | Ram | 1500 | All |
2014 | Ram | 1500 | All |
2011 | Ram | 1500 | All |
2016 | Ram | 1500 | All |
2015 | Ram | 1500 | All |
2019 | Ram | 1500 | All |
2017 | Ram | 1500 | All |
2020 | Ram | 1500 | All |
2022 | Ram | 1500 | All |
2021 | Ram | 1500 | All |
2016 | Ram | 2500 | All |
2023 | Ram | 1500 | All |
2018 | Ram | 1500 | All |
2017 | Ram | 2500 | All |
2015 | Ram | 2500 | All |
2018 | Ram | 2500 | All |
2020 | Ram | 2500 | All |
2022 | Ram | 2500 | All |
2023 | Ram | 2500 | All |
2024 | Ram | 3500 | All |
2021 | Ram | 2500 | All |
2019 | Ram | 2500 | All |
2014 | Ram | 2500 | All |
2024 | Ram | 2500 | All |
2024 | Ram | 1500 | All |
2011 | Ram | 2500 | All |
2012 | Ram | 2500 | All |
2013 | Ram | 2500 | All |
2024 | Ford | F-350 Super Duty | Cab & Chassis with 34 In. Frame |
2024 | Ford | F-450 Super Duty | Cab & Chassis with 34 In. Frame |
2024 | Nissan | TITAN XD | All |
2024 | Ram | 1500 Classic | All |
2009 | Dodge | Ram 1500 | All |
2010 | Dodge | Ram 1500 | All |
2007 | Chevrolet | Silverado 3500 Classic | All |
2002 | Chevrolet | Silverado 1500 | All |
2003 | Chevrolet | Silverado 1500 | All |
2001 | Chevrolet | Silverado 1500 | All |
2004 | Chevrolet | Silverado 1500 | All |
2005 | Chevrolet | Silverado 1500 | All |
2006 | Chevrolet | Silverado 1500 | All |
2007 | Chevrolet | Silverado 1500 | All |
2008 | Chevrolet | Silverado 1500 | All |
2009 | Chevrolet | Silverado 1500 | All |
2010 | Chevrolet | Silverado 1500 | All |
2011 | Chevrolet | Silverado 1500 | All |
2012 | Chevrolet | Silverado 1500 | All |
2013 | Chevrolet | Silverado 1500 | All |
2014 | Chevrolet | Silverado 1500 | All |
2007 | Chevrolet | Silverado 1500 HD Classic | All |
2019 | Chevrolet | Silverado 1500 LD | All |
2018 | Chevrolet | Silverado 1500 | All |
1999 | Chevrolet | Silverado 1500 | All |
2000 | Chevrolet | Silverado 1500 | All |
2017 | Chevrolet | Silverado 1500 | All |
2010 | Dodge | Ram 2500 | All |
2015 | Chevrolet | Silverado 1500 | All |
2001 | Chevrolet | Silverado 1500 HD | All |
2002 | Chevrolet | Silverado 1500 HD | All |
2003 | Chevrolet | Silverado 1500 HD | All |
2005 | Chevrolet | Silverado 1500 HD | All |
2006 | Chevrolet | Silverado 1500 HD | All |
1999 | Chevrolet | Silverado 2500 | All |
2000 | Chevrolet | Silverado 2500 | All |
2001 | Chevrolet | Silverado 2500 | All |
2002 | Chevrolet | Silverado 2500 | All |
2003 | Chevrolet | Silverado 2500 | All |
2004 | Chevrolet | Silverado 2500 | All |
2007 | Chevrolet | Silverado 1500 Classic | All |
2007 | Chevrolet | Silverado 2500 HD Classic | All |
2016 | Chevrolet | Silverado 1500 | All |
2009 | Chevrolet | Silverado 2500 HD | All |
2008 | Chevrolet | Silverado 2500 HD | All |
2010 | Chevrolet | Silverado 2500 HD | All |
2011 | Chevrolet | Silverado 2500 HD | All |
2012 | Chevrolet | Silverado 2500 HD | All |
2014 | Chevrolet | Silverado 2500 HD | All |
2013 | Chevrolet | Silverado 2500 HD | All |
2016 | Chevrolet | Silverado 2500 HD | All |
2015 | Chevrolet | Silverado 2500 HD | All |
2017 | Chevrolet | Silverado 2500 HD | All |
2018 | Chevrolet | Silverado 2500 HD | All |
2019 | Chevrolet | Silverado 2500 HD | All |
2001 | Chevrolet | Silverado 3500 | All |
2001 | Chevrolet | Silverado 2500 HD | All |
2002 | Chevrolet | Silverado 2500 HD | All |
2005 | Chevrolet | Silverado 3500 | All |
2006 | Chevrolet | Silverado 3500 | All |
2003 | Chevrolet | Silverado 2500 HD | All |
2004 | Chevrolet | Silverado 3500 | All |
2004 | Chevrolet | Silverado 2500 HD | All |
2005 | Chevrolet | Silverado 2500 HD | All |
2008 | Chevrolet | Silverado 3500 HD | All |
2010 | Dodge | Ram 3500 | All |
2009 | Chevrolet | Silverado 3500 HD | All |
2010 | Chevrolet | Silverado 3500 HD | All |
2012 | Chevrolet | Silverado 3500 HD | All |
2013 | Chevrolet | Silverado 3500 HD | All |
2014 | Chevrolet | Silverado 3500 HD | All |
2016 | Chevrolet | Silverado 3500 HD | All |
2015 | Chevrolet | Silverado 3500 HD | All |
2017 | Chevrolet | Silverado 3500 HD | All |
2018 | Chevrolet | Silverado 3500 HD | All |
2011 | Chevrolet | Silverado 3500 HD | All |
2002 | Chevrolet | Silverado 3500 | All |
2007 | GMC | Sierra 3500 Classic | All |
2007 | GMC | Sierra 2500 HD Classic | All |
2007 | GMC | Sierra 1500 HD Classic | All |
2019 | GMC | Sierra 1500 Limited | All |
1999 | GMC | Sierra 1500 | All |
2000 | GMC | Sierra 1500 | All |
2001 | GMC | Sierra 1500 | All |
2002 | GMC | Sierra 1500 | All |
2003 | GMC | Sierra 1500 | All |
2004 | GMC | Sierra 1500 | All |
2005 | GMC | Sierra 1500 | All |
2006 | GMC | Sierra 1500 | All |
2006 | Chevrolet | Silverado 2500 HD | All |
2007 | Chevrolet | Silverado 2500 HD | All |
2019 | Chevrolet | Silverado 3500 HD | All |
2007 | GMC | Sierra 1500 Classic | All |
2003 | Chevrolet | Silverado 3500 | All |
2007 | GMC | Sierra 1500 | All |
2015 | GMC | Sierra 1500 | All |
2010 | GMC | Sierra 1500 | All |
2009 | GMC | Sierra 1500 | All |
2011 | GMC | Sierra 1500 | All |
2012 | GMC | Sierra 1500 | All |
2016 | GMC | Sierra 1500 | All |
2017 | GMC | Sierra 1500 | All |
2018 | GMC | Sierra 1500 | All |
2014 | GMC | Sierra 1500 | All |
2003 | GMC | Sierra 1500 HD | All |
2005 | GMC | Sierra 1500 HD | All |
2002 | GMC | Sierra 1500 HD | All |
1999 | GMC | Sierra 2500 | All |
2000 | GMC | Sierra 2500 | All |
2006 | GMC | Sierra 1500 HD | All |
2001 | GMC | Sierra 2500 | All |
2013 | GMC | Sierra 1500 | All |
2008 | GMC | Sierra 1500 | All |
2001 | GMC | Sierra 1500 HD | All |
2002 | GMC | Sierra 2500 HD | All |
2003 | GMC | Sierra 2500 | All |
2007 | GMC | Sierra 2500 HD | All |
2009 | GMC | Sierra 2500 HD | All |
2010 | GMC | Sierra 2500 HD | All |
2011 | GMC | Sierra 2500 HD | All |
2012 | GMC | Sierra 2500 HD | All |
2013 | GMC | Sierra 2500 HD | All |
2014 | GMC | Sierra 2500 HD | All |
2015 | GMC | Sierra 2500 HD | All |
2016 | GMC | Sierra 2500 HD | All |
2017 | GMC | Sierra 2500 HD | All |
2018 | GMC | Sierra 2500 HD | All |
2019 | GMC | Sierra 2500 HD | All |
2003 | GMC | Sierra 2500 HD | All |
2003 | GMC | Sierra 3500 | All |
2004 | GMC | Sierra 3500 | All |
2002 | GMC | Sierra 3500 | All |
2005 | GMC | Sierra 3500 | All |
2002 | GMC | Sierra 2500 | All |
2004 | GMC | Sierra 2500 HD | All |
2001 | GMC | Sierra 3500 | All |
2005 | GMC | Sierra 2500 HD | All |
2008 | GMC | Sierra 2500 HD | All |
2006 | GMC | Sierra 3500 | All |
2007 | GMC | Sierra 3500 HD | All |
2008 | GMC | Sierra 3500 HD | All |
2009 | GMC | Sierra 3500 HD | All |
2010 | GMC | Sierra 3500 HD | All |
2011 | GMC | Sierra 3500 HD | All |
2012 | GMC | Sierra 3500 HD | All |
2013 | GMC | Sierra 3500 HD | All |
2014 | GMC | Sierra 3500 HD | All |
2015 | GMC | Sierra 3500 HD | All |
2016 | GMC | Sierra 3500 HD | All |
2004 | GMC | Sierra 2500 | All |
2001 | GMC | Sierra 2500 HD | All |
2000 | Ford | F-150 | All |
1997 | Ford | F-250 HD | All |
2002 | Ford | F-150 | All |
2003 | Ford | F-150 | All |
2004 | Ford | F-150 | All |
2005 | Ford | F-150 | All |
2006 | Ford | F-150 | All |
2007 | Ford | F-150 | All |
2008 | Ford | F-150 | All |
2009 | Ford | F-150 | All |
2010 | Ford | F-150 | All |
2011 | Ford | F-150 | All |
2017 | GMC | Sierra 3500 HD | All |
2018 | GMC | Sierra 3500 HD | All |
1998 | Ford | F-150 | All |
2019 | GMC | Sierra 3500 HD | All |
1997 | Ford | F-150 | All |
2004 | Ford | F-150 Heritage | All |
1999 | Ford | F-150 | All |
2006 | GMC | Sierra 2500 HD | All |
2001 | Ford | F-150 | All |
1998 | Ford | F-250 | All |
2003 | Ford | F-250 Super Duty | All |
2004 | Ford | F-250 Super Duty | All |
2005 | Ford | F-250 Super Duty | All |
2006 | Ford | F-250 Super Duty | All |
2007 | Ford | F-250 Super Duty | All |
2008 | Ford | F-250 Super Duty | All |
2009 | Ford | F-250 Super Duty | All |
2010 | Ford | F-250 Super Duty | All |
2011 | Ford | F-250 Super Duty | All |
2012 | Ford | F-250 Super Duty | All |
2013 | Ford | F-250 Super Duty | All |
2014 | Ford | F-250 Super Duty | All |
2015 | Ford | F-250 Super Duty | All |
2016 | Ford | F-250 Super Duty | All |
1999 | Ford | F-550 Super Duty | All |
2000 | Ford | F-550 Super Duty | All |
2002 | Ford | F-250 Super Duty | All |
1999 | Ford | F-250 | All |
1999 | Ford | F-250 Super Duty | All |
2000 | Ford | F-250 Super Duty | All |
2001 | Ford | F-250 Super Duty | All |
2001 | Ford | F-550 Super Duty | All |
2014 | Ford | F-150 | All |
1997 | Ford | F-250 | All |
2013 | Ford | F-150 | All |
2012 | Ford | F-150 | All |
2002 | Ford | F-550 Super Duty | All |
2003 | Ford | F-550 Super Duty | All |
2004 | Ford | F-550 Super Duty | All |
2005 | Ford | F-550 Super Duty | All |
2006 | Ford | F-550 Super Duty | All |
2007 | Ford | F-550 Super Duty | All |
2010 | Ford | F-550 Super Duty | All |
2011 | Ford | F-550 Super Duty | All |
2012 | Ford | F-550 Super Duty | All |
2009 | Ford | F-550 Super Duty | All |
2008 | Ford | F-550 Super Duty | All |
2014 | Ford | F-550 Super Duty | All |
2023 | Ford | F-550 Super Duty | All |
2024 | Ford | F-550 Super Duty | All |
2022 | Ford | F-550 Super Duty | All |
2004 | Nissan | TITAN | All |
2005 | Nissan | TITAN | All |
2006 | Nissan | TITAN | All |
2007 | Nissan | TITAN | All |
2008 | Nissan | TITAN | All |
2009 | Nissan | TITAN | All |
2010 | Nissan | TITAN | All |
2011 | Nissan | TITAN | All |
2012 | Nissan | TITAN | All |
2013 | Nissan | TITAN | All |
2014 | Nissan | TITAN | All |
2015 | Ford | F-550 Super Duty | All |
2013 | Ford | F-550 Super Duty | All |
2016 | Ford | F-550 Super Duty | All |
2017 | Ford | F-550 Super Duty | All |
2018 | Ford | F-550 Super Duty | All |
2020 | Ford | F-550 Super Duty | All |
2021 | Ford | F-550 Super Duty | All |
2019 | Ford | F-550 Super Duty | All |
2018 | Nissan | TITAN | All |
2020 | Nissan | TITAN | All |
2021 | Nissan | TITAN | All |
2022 | Nissan | TITAN | All |
2023 | Nissan | TITAN | All |
2024 | Nissan | TITAN | All |
2010 | Toyota | Tundra | All |
2011 | Toyota | Tundra | All |
2012 | Toyota | Tundra | All |
2013 | Toyota | Tundra | All |
2014 | Toyota | Tundra | All |
2015 | Nissan | TITAN | All |
2016 | Nissan | TITAN | All |
2017 | Nissan | TITAN | All |
2019 | Nissan | TITAN | All |
2016 | Toyota | Tundra | All |
2024 | Toyota | Tundra | All |
2021 | Toyota | Tundra | All |
2022 | Toyota | Tundra | All |
2023 | Toyota | Tundra | All |
2015 | Toyota | Tundra | All |
2018 | Toyota | Tundra | All |
2017 | Toyota | Tundra | All |
2019 | Toyota | Tundra | All |
2020 | Toyota | Tundra | All |
2025 | Ram | 1500 | All |
2025 | Toyota | Tundra | All |
2025 | Ram | 2500 | All |
2025 | Ram | 3500 | All |
2025 | Ford | F-350 Super Duty | Cab & Chassis with 34 In. Frame |
2025 | Ford | F-450 Super Duty | Cab & Chassis with 34 In. Frame |
2025 | Ford | F-550 Super Duty | All |