bing tracking image
  1. Custom Fit Vehicle Wiring
  2. CURT
  3. Custom Fit
  4. 7 Round - Blade
  5. Fifth Wheel and Gooseneck Wiring
  6. 10 Feet Long
Curt 5th Wheel/Gooseneck Custom Wiring Harness w/ 7-Pole Connector - 10' Long

Curt 5th Wheel/Gooseneck Custom Wiring Harness w/ 7-Pole Connector - 10' Long

Item # C56000
Our Price: $117.95
You Save: $50.00
Custom Fit Vehicle Wiring

Will this fit?

To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.

Add to cart
In Stock
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

In Use/Installed

Customer Photos

Need help with installation?
Locate installers near me
Mount this 7-way, RV-style connector in your truck bed for quick, simple hookup of your 5th-wheel or gooseneck trailer. Custom harness plugs in-line with your existing factory wiring so that you can retain use of your vehicle's factory 7-pole. 1-800-940-8924 to order CURT custom fit vehicle wiring part number C56000 or order online at Free expert support on all CURT products. Great prices and Fastest Shipping for Curt 5th Wheel/Gooseneck Custom Wiring Harness w/ 7-Pole Connector - 10' Long. Custom Fit Vehicle Wiring reviews from real customers.
  • All Info
  • Reviews (200)
  • Q & A (0)
  • Photos

CURT Custom Fit Vehicle Wiring - C56000

  • Custom Fit
  • 7 Round - Blade
  • Fifth Wheel and Gooseneck Wiring
  • CURT
  • 10 Feet Long

Mount this 7-way, RV-style connector in your truck bed for quick, simple hookup of your 5th-wheel or gooseneck trailer. Custom harness plugs in-line with your existing factory wiring so that you can retain use of your vehicle's factory 7-pole.


  • Provides 7-way, blade-style connector in your truck bed for hassle-free hookup of 5th-wheel and gooseneck trailers
    • Connector mounts in truck-bed sidewall, tailgate post or wheel well
  • Retains factory 7-pole trailer connector at rear of truck (if present)
  • Plugs into factory wiring - no cutting or splicing
    • 10' Long, insulated wiring harness reaches from rear bumper to truck bed
    • Requires that truck have factory tow package
  • Custom fit for your vehicle
  • Includes zip-ties and self-tapping screws for installation


  • Harness length: 10'
  • Wire configuration:
    • Yellow: reverse lights
    • Green: tail lights
    • Brown: right turn and brake lights
    • Blue: electric brakes
    • Black: 12V battery charge
    • Red: left turn and brake lights
    • White: ground wire
  • Limited 1-year warranty

56000 CURT Fifth Wheel and Gooseneck OEM Extension Harness - 7-Way RV Blade Plug - 10' Long

Installation Details C56000 Installation instructions

This Product Fits The Following Vehicles

California residents: click here

Customer Satisfaction Score:

Customer Reviews

Curt 5th Wheel/Gooseneck Custom Wiring Harness w/ 7-Pole Connector - 10' Long - C56000

Average Customer Rating:  4.8 out of 5 stars   (200 Customer Reviews)

Mount this 7-way, RV-style connector in your truck bed for quick, simple hookup of your 5th-wheel or gooseneck trailer. Custom harness plugs in-line with your existing factory wiring so that you can retain use of your vehicle's factory 7-pole.

Ford Escape

Installation was very straight forward.
used some left over pieces of foam pipe insulation over the cable where it passed over the truck frame and th inner wheel well. I mounted the extended Seven Pin connector just forward of the wheel well just below the bed rail on the driver's side.
The umbilical from our 5th wheel reaches with enough slack to lay on the truck bed.
We picked up our Escape 5.0TA two weeks ago and drove about 3300 miles from WA to MI.
The plug was easy to plug in and unplug.
Overall a very nice product.



After 1 year still very satisfied with this product. Would buy again.

Etrailer Expert

Jerred H.


@Ronald That's awesome! Thanks for the feedback!


Worked great, I traded the vehicle that I installed the wiring adapter in tho. So it may be of use to someone else also.


Initially worked great, but now it keeps losing connection to the camper. I had to plug the camper in to the 7 way on the bumper to get home. Everything would seem fine but then getting on the highway I'd get a warning message on the dash and lose lights/trailer brakes. Not something you want happening at 70mph.

2016 Chevrolet Silverado 3500

Truly happy with this product and can't wait to go to work! etrailer sent me everything I requested and the installer had no problems. Everything was packed well in shipping with no problems.

2016 Ford F-350 Super Duty

This product makes it so simple to add a Fifth wheel plug into the bed. Installation takes maybe 20-30 minutes. I installed mine on the column at the tailgate so it is out of the way (less likely to get damaged by other cargo). The only issue I experienced with install was that due to the small opening in that column (from under the vehicle), I had to remove the gray wire cover and then reinstall it after feeding the wire harness up into the column. (This was minor) Would definitely recommend this as it is simply "plug n play" with no cutting of wires or crimping needed.

Richard P.


Product and location has worked perfectly and keeps on doing so. Great product!

2014 Ford F-250 Super Duty

Very pleased with All product information and reviews help make decision very easy. Very quick delivery and installation instructions are very easy to follow. Purchased 5th wheel hitch and custom wiring extension for my 2014 F250.

Mike S.


Thanks for the follow up. I’ve enjoyed the products ease of installation and use. I easily hook up my 5th wheel camper by myself and have had no issues. Great products!


Product arrived overnight and I installed it upon arrival in order to be able to leave on a planned trip. Install was quick and easy and product was as advertised. I appreciated etrailer getting the order out immediately to me. Top rate company.

2021 Ram 2500

direct fit plug and play had no issues!

2016 Chevrolet Silverado 2500

The cord made the electrical part of installing my new fith wheel hitch very easy just plug in the connections and your done .

Kevin L.


The products have worked flawlessly no problems and thank you for checking back with me its nice when a company cares about there costumers. Next time I need any trailer products I will definitely be contacting etrailer.


Delivery was ahead of schedule. The product is top grade. I installed it myself which took all 45 minutes. Tested it on the trailer and everything worked perfectly.


Plug and play. Works great.


The trailer wiring extension worked perfectly for my 2013 2500HD setup. It was easy to install and makes hooking up and trailering that much easier.


Nice long wiring harness.


Awesome product fit the truck just like it should and very easy to install keeps me from scratching the tailgate with a wire over the back of the truck easy to reach when hooking up trailer


Working very well yet!


Easy install and a great product. Used on 5th wheel rv trailer. No more wiring cord from trailer hanging over the end gate. Thanks!


Went on in minutes


Customer service for product selection and order entry were excellent and focused on my interests and needs. The hitch, custom installation kit, and harness were shipped very quickly and arrived sooner than expected. Everything arrived in excellent condition. Assembly and installation instructions were very clear and specific, and I was able to assemble and install everything with no problems and in a very reasonable amount of time. Total cost was roughly half of what it would have been if I had purchased the products and had them installed by a dealer. I am very satisfied with my experience dealing with, and would highly recommend them to anyone shopping for towing products.

Peter C.


Awesome. The hitch has worked great. Very, Very happy with the purchase,delivery, installation which I did myself, and performance of the product.Thanks again,Ill be sure to refer anyone who needs products you offer to you.


Looks like an easy install good quality

2006 Ford F-250 and F-350 Super Duty

I'm a huge fan of completing wiring projects with no "hacking" into harnesses. This harness is plug and play. When I finished installing it, the underside of the truck looks like it came from the factory. Job done



I havent thought about it for a year. I can give no higher praise for a does its job very well.

2016 Ford F-350 Super Duty

I haven't installed it yet, however, I cut the inside bed wall in preparation for a spray-in bed liner before installing.
It looks just like the picture and description, arrived undamaged and ready for install. Great installation instructions!



Still using and I really like the hitch and other items I purchased a year ago. After installing the Curt fifth wheel hitch, Ive used it several times and I will be using it a bunch over rbe next several weeks. Easy to maintain and use.

2019 Ram 2500

This is an easy install and seems well made. I probably didn’t need the 10’ long my truck called for but no problem zip tying up out of the way. Well pleased.


This wiring harness made adding a plug in the bed of the truck for the gooseneck trailer a breeze. I didn’t really need the 10’ harness but I just looped and zip tied the excess. One year later and the plug still works great.

2004 Ford F-250 and F-350 Super Duty

Do not like anything to do with automotive wiring so I purchased this item because it appeared to be just plug and play with no cutting or splicing wires. It is just that, plug and play and it was done.

Unplugged 7 point connector attached to bumper and plugged in the new wiring harness. One other plug was unplugged and wiring harness 2nd plug was plugged in. Route wiring loom along along factory wiring loom inside frame close to the front of my 2004 F 250 super Duty 8ft truck bed. Drilled hole and connected harness and plug so my slide in camper electrical will plug into this trailer plug. Screws to mount to inside of truck bed are stainless steel which is great to protect against rust. I also brushed Rustoleum paint inside the hole I cut so there was no bare metal surfaces exposed. 10ft wiring loom was the right choice to get plug up near the front of my 8ft bed.

2019 Dodge Ram Pickup

Quality product with simple plug and play installation.
My 2019 Ram 3500 does not have the fifth wheel prep package. This (and Curt fifth wheel hitch rails / brackets also purchased) made it easy.
Have used this product since 10/ problems in wet or (AZ) dry.

Show More Reviews

See what our Experts say about this CURT Custom Fit Vehicle Wiring

  • Recommended Sliding 5th Wheel Hitch for a 2015 Chevy Silverado 2500
    A 16,000 lbs 5th wheel hitch would be perfect for your 2015 Chevy Silverado 2500. Since your truck has the gas engine you're no where near having an 18,000 lbs capacity so paying for a hitch that has one is unnecessary. Since you have the Curt Double Lock item # C611-624 and it sounds like you also have the Curt X5 5th-Wheel Base Rail Adapter Plate item # C16220, I recommend the Curt A16 5th Wheel Trailer Hitch w/ R16 Slider item # C16521. This 5th wheel hitch has a 16,000 lbs capacity...
    view full answer...
  • 5th Wheel Bracket/Rail Kit for 2002 GMC Sierra 2500
    I've got two different kits that'd I'd recommend, one is the # RP30035 universal kit that would require drilling into the truck frame, which would put the average install time at about 6 hours. The other is a custom install kit from Curt, part # C16418-204 that would require no frame drilling for the short bed truck or for the long bed you'll need to drill 2 frame holes. This shaves about 2 hours off the install, so many folks find the price differential between the two to be worth it....
    view full answer...
  • Installing Curt C16036 Puck Compatible 5th Wheel Hitch in 2014 Ford F250 Without Pucks
    The Curt A25 hitch you referenced, part # C16036 is designed to fit directly into the factory pucks installed into the bed of trucks equipped with the factory tow/prep package. If your truck doesn't have the pucks in the bed, there are two alternatives to make that hitch work with your truck. You could use the # C16424-104 custom 5th wheel install bracket/rail kit you'd looked at, but you'd first need to remove the puck-compatible legs on your hitch and replace them with rail-compatible...
    view full answer...
  • Fit of Reese RP56018-53 5th Wheel Install Kit on 2019 Ram 1500
    The Reese # RP56018-53 is compatible with 2019 Ram 1500 models regardless of whether or not they're equipped with the air suspension, as long as it isn't a 1500 Classic. If you'd like to install a 7-way trailer connector in the bed of your truck so you don't have to run the trailer connector cable up over the tailgate, you can install one using part # C56000.
    view full answer...
  • Recommended Truck Bed 7 Way for 2020 GMC Sierra 2500HD Denali
    Yes. You can use the Curt # C53CR that you were looking at and it will tee into the existing wiring to give you a 7 way connector in the truck bed of your 2020 GMC Sierra 2500HD Denali. This will keep the 7 way on your rear bumper operational as well in the event that it also needs to be used occasionally. I've linked a review and installation video of a similar harness that you can use as a guide during installation.
    view full answer...
  • 5th Wheel Mounting Bracket/Rail Kit for 2017 Ram 2500
    We have several 5th wheel bracket/rail kits that would work for your 2017 Ram 2500 to install your Curt item # 16055 gooseneck plate adapter, but I'd recommend the Curt # C16427-204 as the least expensive alternative. The bed rails provided with the kit are industry standard, so they'd be compatible with your item # 16055 plate. If you don't have a 7-way mounted in your truck bed, you can install one using part # C56000. I'll link to install videos for the rail kit and the 7-way harness...
    view full answer...
  • Gooseneck Hitch Recommended for 2013 Chevy Silverado 3500 Long Bed
    The best gooseneck hitch for you will depend on what your future needs will be. If all you'll ever tow is a gooseneck trailer, then a quality hitch that's more on the inexpensive side of the spectrum will do just fine for you. If that's the case, I'd recommend the Curt Double Lock, Flip and Store Underbed Gooseneck Hitch w/ Installation Kit, part # C607-604. If you can see yourself wanting to tow a fifth wheel trailer at some time in the future, I'd choose a gooseneck hitch that can be...
    view full answer...
  • Fifth Wheel Install Rail/Bracket Kit for 2013 Ram 2500
    Are you needing a Gooseneck Hitch which provides a 2-5/16 inch ball mounted in the truck bed, or a fifth wheel hitch which installs on rails mounted to the floor of the truck bed? The goosenck hitch rail kit you need will depend on which B&W, Reese or Curt gooseneck hitch you're using. If you could reply with that information, I'd be happy to make a recommendation. If you were looking for fifth wheel mounting brackets/rails, if the fifth wheel hitch you're using is compatible with industry...
    view full answer...
  • Recommended 5th Wheel Rail Kit for a 2017 Chevy Silverado 1500
    To add a set of 5th wheel rails to the bed of your 2017 Chevy Silverado 1500 you will want the Curt Custom Fifth Wheel Installation Kit item # C16400-204. This custom installation kit mounts in pre existing holes in your Silverado's frame. It will give you a set of industry standard rails that are compatible with most 5th wheel hitches. To make towing with a 5th wheel easier I recommend adding the Curt 5th Wheel/Gooseneck Custom Wiring Harness w/ 7-Pole Connector - 10' Long item # C56000....
    view full answer...
  • Which B&W Patriot 5th Wheel Hitch for 2005 Ford F-150
    The hitch option you'd need will depend on your bed length. If you have the 8 foot bed, the # BWRVK3200 you'd looked at would be perfect along with the # BWRVK2404 install kit. If you have a 6-1/2 foot 'standard' bed, you'll need a sliding hitch to provide proper clearance between the front of the 5th wheel and the rear of the truck cab. The # BWRVK3200 would not provide that clearance, but the sliding version, part # BWRVK3270 is what you'd want to use. You'll also need the # BWRVK2404...
    view full answer...
  • Recommended UnderBed Gooseneck Hitch for a 2021 Ram 2500
    The Curt Custom Underbed OEM-Style Gooseneck Trailer Hitch item # C60633 you were looking at along with all of our other options will not be able to fit on your 2011 Ram 2500. There have been frame changes and those are custom fit parts. I can confirm that the Curt Custom Gooseneck Trailer Hitch item # C60633 does fit your 2021 Ram 2500. It has a 30,000 lbs capacity and mounts below your truck bed to give you complete access when not in use. I have linked an installation video below....
    view full answer...
  • Will Curt 5th Wheel 90-Degree Wiring Harness # C56000 Fit 2014 Dodge Ram 2500
    We offer fifth wheel/gooseneck wiring harness # C56000 as a confirmed fit for the 2014 Ram 2500. This will plug in to the round connector located under the rear bumper. The harness is 10-feet in length and includes zip-ties and self-tapping screws for installation.
    view full answer...
  • Recommended 5th Wheel Sliding Hitch for 2013 Ford F-250 SRW Shortbed Pickup
    Thank you for the photos of your truck. It looks like the truck had a custom-fit 5th wheel bracket kit installed previously and that the base rails were removed. You will need a sliding 5th wheel hitch for your short-bed 2013 Ford F-250 SRW pickup. We do not recommend mixing 5th wheel hitch components from different brands because in some cases there can be compatibility issues between the rails and under-bed brackets. Unless you can confirm the brand of those brackets you will be better...
    view full answer...
    Image 1 for
  • Compatibility of Reese 5th Wheel Hitch with Curt Custom Fit Base Rail Kit
    The Reese 5th Wheel Trailer Hitch w/ Square Tube Slider - Dual Jaw - 16,000 lbs # RP30051 is a fit with industry standard above bed rails or adapters. The Curt Custom Fifth Wheel Installation Kit for Dodge Ram - Carbide Finish # C16430-204 you mentioned for your 2013 Ram 2500 will work great as they are the Industry Standard Base rails and the brackets are a confirmed custom fit. You may want to also consider adding the Curt 5th Wheel/Gooseneck Custom Wiring Harness w/ 7-Pole Connector...
    view full answer...
  • Recommended Sidewinder & 5th Wheel Hitch For 2017 Ram Mega Cab and 2015 Forest River Vengeance 320A
    For your 2015 Forest River Vengeance 320A Super Sport model and your 2017 Ram Mega Cab with 64 inch bed, I have the solution you are seeking to ease your mind. Let's start from the beginning with rails and a hitch. If you have the factory rails, then I recommend the Reese M5 5th Wheel Hitch # RP30918. If you don't have the factory pucks, then I recommend the Reese Quick-Install Custom Base Rails and Installation Kit for 5th Wheel Trailer Hitches # RP50054-58 to give you the above bed...
    view full answer...
  • Will the Curt 5th Wheel Wiring Work on my 2020 F-350 Super Duty?
    Yes the Curt 5th Wheel/Gooseneck Wiring Harness 7-Pole item # C56000 will work for your 2020 Ford F-350 and provide you with a 7-way connector in the bed of your truck so your wiring isn't hanging over the tailgate. If I may, I don't recommend going with that particular one. Instead I recommend you use the Bargman 5th Wheel/Gooseneck 90-Degree Wiring Harness for Aluminum Truck Bed - 7 Way RV - 7' Long part # 54701-007-010 while they both serve the exact same functions this one is designed...
    view full answer...
  • Recommended 5th Wheel Hitch for 2015 Chevy Silverado 3500 and 17,000 lb GVWR on 5th Wheel Trailer
    For your 17,000 lb GVWR on your 5th wheel, you will be fine using an 18,000 lb hitch like the B&W Patriot 5th Wheel Trailer Hitch # BWRVK3255. The hitch will be just as safe for your trailer as a hitch rated for 20,000 lbs because you will still be well under the capacity of the hitch even when your trailer is loaded to capacity. For your rails on your 2015 Silverado 3500, I recommend the B&W Custom Installation Kit w/ Base Rails for 5th Wheel Trailer Hitches # BWRVK2506. This kit has...
    view full answer...
  • Parts Needed to Install Sliding Curt 5th-Wheel Hitch on 2014 Ford F-250 with Factory Rail Kit
    Since your F-250 does have the factory rail kit, all you will need is the Reese Elite Series Underbed Rail Adapter # RP30156. This will mount to the existing rails via the Power Puck system and is compatible with any 5th-wheel hitch that attaches to standard, above-bed base rails such as the Curt Slider # C16541. I've attached a video review of this adapter for you. If you don't have one already, I also recommend adding a 5th-wheel wiring harness like the Curt # C56000. Once installed,...
    view full answer...
  • Recommended Adapter to Use Reese Standard 5th-Wheel on 2017 Ford F-250 with Factory Rail Kit
    To use your Reese 5th Wheel Trailer Hitch # RP30047 on your new 2017 Ford F-250 with the factory rail kit, you will just need the Reese Elite Series Underbed Rail Adapter # RP30156. This will mount to the rails on your truck via the Power Puck system and is compatible with your Reese 5th-wheel trailer hitch. I have included a demonstration video of this product for you to review. Since your F-250 has a shorter bed, you might also consider a sliding hitch like the Reese # RP30051. This...
    view full answer...
  • Bumper-Mount & Bed-Mount 7-Way Trailer Sockets for 2003 Ford F-250
    You can use the harness portion of kit # 40167 to plug in to the OEM wiring on your 2003 Ford F-250 but change out the socket part with part # HM40975 for use on your bumper. Then for the truck bed gooseneck harness you can use the 7-way # C56000 which will connect between the bumper socket and OEM wiring using round U.S. Car connectors.
    view full answer...
  • Hitch Compatibility of 5th Wheel Bracket and Bed Rail Mounting Kit for 2006 Ford F250
    The Reese 5th wheel hitch you mentioned is compatible with industry standard rails manufactured by Curt, Draw-Tite, Husky, Valley, B&W and Demco, among others. The Curt # C16448-104 fifth wheel install bracket/rail kit you've looked at is indeed a fit for your 2006 Ford F250, it'll work great for you. If you don't already have a 7-way connector installed in the truck bed, you could do so using part # C56000. I've linked you to install videos for the bracket kit and the wiring kit...
    view full answer...
  • Recommended Custom 5th Wheel Frame Brackets for Bed Rails on 1999 Ford F-250
    For your 1999 Ford F-250, I recommend the Reese Quick-Install Custom Bracket Kit for 5th Wheel Trailer Hitches # RP50082. These brackets are a custom fit and will work well with your 5th wheel rails. I also recommend using the Replacement Hardware Kit for Reese 5th Wheel Base Rails - 10 Bolt # RP58504 as the hardware for your current rails is only intended for one time use. You may also want to consider using the 5th wheel wiring harness # C56000 to add a second 7-way to the bed of...
    view full answer...
  • Recommended Fifth Wheel Hitch Option For 2017 Ford F-350
    If you are wanting to keep your bed free of base rails for a fifth wheel hitch I recommend the B&W Turnoverball Underbed Gooseneck Trailer Hitch and a Companion fifth wheel hitch. The correct Turnoverball for your F-350 part # BWGNRK1116. This hitch gives you complete bed access when you are not towing and comes with a custom mounting kit. The Companion fifth wheel hitch I recommend is part # BWRVK3500. This is a dual-jaw system with a capacity of 20,000-lbs. It fits right into the gooseneck...
    view full answer...
  • Gooseneck Trailer In-Bed Wiring Connector for 2016 Nissan Frontier
    When using the Replacement Wiring Harness for Tekonsha Vehicle Wiring Harness - 7-Way Connector # 118282, you can use the Curt 5th Wheel/Gooseneck Wiring Harness 7-Pole - GM, Ford, Dodge, Nissan, Toyota w/ Factory Tow # C56000 which will connect right up without issue.
    view full answer...

< Previous
123. . .32

Do you have a question about this Custom Fit Vehicle Wiring?

Info for this part was:

Employee Leah B
Edited by:
Leah B
Employee Jackie C
Expert Research:
Jackie C
Employee Mike L
Expert Research:
Mike L
Employee Jameson C
Expert Research:
Jameson C
Employee Andrew K
Video by:
Andrew K
Employee Jonathan Y
Video by:
Jonathan Y
Employee Lindsey S
Written by:
Lindsey S
Employee Jeff D
Video Edited:
Jeff D
Employee Joshua S
Video Edited:
Joshua S
Employee Jacob T
Video Edited:
Jacob T
Employee Kathleen M
Video Edited:
Kathleen M
Employee Chris R
Video Edited:
Chris R
Employee Zach D
Video Edited:
Zach D
Employee Cole B
Installed by:
Cole B
Employee Randy B
Test Fit:
Randy B
Employee Brent H
Test Fit:
Brent H
Employee Shane H
Test Fit:
Shane H
Employee Robert C
Test Fit:
Robert C
Employee David F
Test Fit:
David F
Employee Wilson B
Updated by:
Wilson B
Employee Amanda M
Updated by:
Amanda M
Employee Kristina F
Updated by:
Kristina F
Employee Isabelle B
Updated by:
Isabelle B

At we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.