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UPC: 612314560011

10' Custom Wiring Extension Harness (Adds 7-Way RV Blade to Truck Bed) #56001

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  • Routes a 7-way RV blade socket into truck bed while retaining use of rear socket
  • Simple plug-and-play design eliminates the need for cutting or splicing
  • Allows for easy connection of 5th wheel or gooseneck wiring
  • 7-way connects tail, brake, reverse, turn signals, brakes and auxiliary power
  • 10' extension with right-angle plug for easy installation
  • Spring-loaded dust cover keeps connector clean when not in use
  • Slit loom keeps wires contained and well protected


  • Requires 2-1/8" hole saw for installation

Guides & Install Sheets

Product Videos

  • Product Videos Trailer Wiring Install: CURT 56001 7-Way Extension Harness for Dodge Trucks


  • Electrical Package TypePackaged
  • Part Type*
  • Shipping Weight2.800
  • WarrantyOne-Year Limited Warranty
  • MaterialBlank
  • HUB_USAD25
  • Installation DifficultyModerate

WARNING: Cancer and Reproductive Harm -

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 10'. It is compatible with the Dodge Ram 1500, 2500, 3500 and Dakota (to verify your vehicle compatibility, see the CURT application guide at 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.

1995 Dodge Dakota ALL
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1995 Dodge Ram 1500 ALL
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2002 Dodge Ram 1500 ALL
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2005 Dodge Ram 1500 ALL
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2007 Dodge Ram 1500 ALL
2008 Dodge Ram 1500 ALL
1995 Dodge Ram 2500 ALL
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1995 Dodge Ram 3500 ALL
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2008 Dodge Ram 3500 ALL
2009 Dodge Ram 3500 ALL
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