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

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

Item # C56071
Our Price: $91.95
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Custom Fit Vehicle Wiring

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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 C56071 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 - 7' Long. Custom Fit Vehicle Wiring reviews from real customers.
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  • Reviews (77)
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CURT Custom Fit Vehicle Wiring - C56071

  • Custom Fit
  • Fifth Wheel and Gooseneck Wiring
  • 7 Round - Blade
  • CURT
  • 7 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
    • 7' 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
  • Assembled in the USA


  • Harness length: 7'
  • 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

56071 CURT Fifth Wheel and Gooseneck OEM Extension Harness - 7-Way RV Blade Plug - 7' Long

Installation Details C56071 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 - 7' Long - C56071

Average Customer Rating:  4.5 out of 5 stars   (77 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.


The CURT wiring harness appears to be correct, but I have not installed it yet. I will provide more details after I install this harness. I think that the 7 foot length will be just right for the truck, but I will know more once I install it.


The pins on this didn’t like to make contact with my trailer connector. The trailer is brand new. I had to do some tweaking to get it to work right.

1999 Dodge Ram Pickup

Box was open.

Etrailer Expert

Jenny N.


Oh no! I will have our Customer Service team reach out to you. If anything is missing we will replace it .


Worked as decribed, and was plug and play. Throw the hardware they provide out and replace with S.S. hardware.

2006 Dodge Ram Pickup

This product worked at first. Then, my lights on my trailer did not work when they were plugged in as usual. This product is an in bed wiring connector so you don't have to hang your goose-neck light wiring over the tail gate. I traced the problem to the Curt harness. I have since unplugged the Curt harness and hooked up the OEM light harness on the truck. And, subsequently have been hanging my lights over the tailgate and no problems with the trailer lights. (It was the Curt harness not the trailer lights).


I like the simplicity of install with the plug and play wiring harness but the trailer plug itself where are you plug in your trailer is lacking, when trailer plugged in fit is very sloppy and trailer loses connection often, which is very sketchy when towing my 40 foot, 20,000 pound fifth wheel that you rely on the trailer brakes for stopping


Was a very easy install, only hiccup was no right hand signal or brake light. Called trailer's and they clued me on the right side was the brown wire. Worked the ends of the brown wire and found the end that plugs to the truck power was loose, with some pushing it clicked in and now works great. Would definitely recommend this product and etrailer. Bought this to bring my 5th wheel plug into the bed.

2007 Dodge Ram Pickup

Parts just arrived. All in excellent condition. The greatest part is the excellent installation instruction videos available on line. I am beginning the installation of 5th wheel hitch, this wiring harness and a Curt trailer brake controller. The video for the controller showed me where to find the OEM plug which was taped up behind the wiring harness bundle under the dash that would have been impossible to find otherwise. Other companies may have the same parts but etrailer also educates. Absolutely, far and away the best!!

Dodge Ram Pickup

We received the 5th Wheel / Gooseneck harness to work with our existing Dodge Ram 3500 trailer hitch wiring group with no problems. The assembly was installed and tested within 30 minutes and everything worked as it was supposed to. I felt the product and service I received was extremely well done and I would recommend eTrailer and there products to anyone. Thanks again - problem solved!


The 7 pole connector wire harness worked great. It was heavy duty and well built. The only thing that could have been better was the plugs. I have a 1999 Dodge truck and the plugs fit perfect however they do not "Clip" in. I had to tape them. Other than that I am pleased.

1999 Dodge Ram Pickup

Great product (Curt 5th Wheel/Gooseneck Custom Wiring Harness w/ 7-Pole ). Great service.
Easy installation
great instructions with pictures
Super fast shipping
Great customer service
Will definitely recommend to friends and family

2001 Dodge Ram Pickup

Very happy with this. I read people saying it was too long but on my 01 short bed dodge it was perfect length to put it in the tailgate post. Wire, plugs and heat shrink all good quality. Only thing really needed is s drill, self tapper bit and a 2-1/8 hole saw. Installation time for me was less than an hour.

2007 Dodge Ram Pickup

Installed in less than hour. Perfect fit. Only negative, too much cable depending on installation location., would be nice to offer a long and short version. Certainly not a functional issue. Recommend this product. Etrailer service was excellent, very much appreciate the videos and accompanying documentation.

2007 Dodge Ram Pickup

Easy install and very good customer service. Fast shipping!!!


This product is exactly what it says it is any body can do this on there truck in less than a hour I am very pleased with this product my customer was very happy with it he ain't never used a bed plug before and had bumper plug for his gooseneck he was pleased

1998 Dodge Ram Pickup

This harness makes for a quick and easy installation, I actually have two of these hooked up on my truck, one for the receiver and one ran into the sidewall of the bed for the goose neck. Good quality build with every thing sealed as it should be.

2008 Ram 2500

I have not had a chance to install this product yet I have only compared the two harness for likeness, but it looks like it will be a direct plug and play into my 2008 dodge 2500 just as stated. The wires used look to be of good quality and it’s all nicely wrapped and taped in wire loom.

2008 Dodge Ram Pickup

I was happy with the transaction with etrailer. The website was very helpful in finding what I needed. The product was received ahead of the committed date. The only problem was with the packaging. Some of the boxes were pretty beat-up and the parts were scratched with the finish damaged. That was a little disappointing.

2008 Dodge Ram Pickup

From what I can tell it seems to be a good product. The install was pretty straight forward and easy. The only complaint I have is that one of the plugs would not lock in good. I just put a zip tie around it to ensure connection wouldn't be lost during road conditions.


The shipping estimate was perfect and delivered on time. Haven’t had the opportunity to tow with it yet, but the hitch came with minor scratches and small dents due to shipping. Definitely would still recommend.

2005 Dodge Ram Pickup

I have a 05 ram 2500 and the gooseneck harness was easy to install and plugged right into the factory harness. Thank you.


Easy...great wiring solution to connect existing tow package wiring to accommodate camper or fifth wheel.

2008 Dodge Ram Pickup

Awesome product. Took me longer to find my hole saw in the garage than it did to instal the harness. Took less than 20 minutes

Dodge Ram Pickup

Plug and play gooseneck wiring addition for my Dodge Ram. Well made.


Good quality product easy to install. Just purchased a new fifth wheel trailer and brought it home yesterday.

Show More Reviews

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

  • After Installing a CURT Fifth Wheel Extension Harness Will Both 7-Ways Work
    If you install the CURT Fifth Wheel / Gooseneck Extension Harness # C56071 that you referenced you will able able to use the 7-way at the rear of your vehicle and the one inside the truckbed without any problems. Basically, they both are active and either can be used without problems. I attached installation instructions for this product for you to check out also.
    view full answer...
  • Fifth Wheel Trailer Wiring Recommendation for a 2001 Dodge Ram 2500
    For trailer wiring that would allow you to install a 7-way in the bed of your 2001 Dodge Ram 2500 you would want the part # C56071 that has been confirmed as a fit. This will plug in-line with the 7-way you have at the rear of your truck and then will provide you with a 7-way to install in the wheel well.
    view full answer...
  • In-Bed 7-Way Wiring Kit for a 2004 Dodge Ram 2500
    Yes, the correct Curt 7-Way tee-in connection for your 2004 Dodge Ram 2500 is the following: - Curt 5th Wheel/Gooseneck Custom Wiring Harness w/ 7-Pole Connector # C56071 This comes with a 7' lead so you can easily reach a different point in your truck bed.
    view full answer...
  • Replacement 7-Way Bumper and Truck Bed Connectors for 1996 Dodge Ram 3500
    The Curt 7-pole 5th wheel wiring harness you referenced, part # C56071, and the Hopkins replacement 7-way # 42125 will work together in your 1996 Dodge Ram 3500. They will connect together behind the bumper and give you 7-way connectors at both the bumper and in the truck bed. Part # 42125 is compatible with your 1996 Ram 3500.
    view full answer...
  • 7-Way Recommendation for Bed of 2006 Honda Ridgeline
    If you have a 7-way already installed at the rear of your 2006 Honda Ridgeline all you would need to add a second one up in the bed of your Ridgeline is the part # 41157.
    view full answer...
  • Connecting Aftermarket Brake Controller to Curt 5th Wheel Harness on 1997 Dodge Ram 3500
    Since you have the factory tow package you should be able to simply plug the aftermarket brake controller into the factory connector. The connector is usually located under the dash near the emergency brake pedal. If you have a 4 way connector at the rear of your Ram you will want to add a 7 way. You will need the Hopkins Adapter 4-Pole to 7-Pole and 4-Pole # 37185 to complete your wiring. The blue brake wire will not run all the way back to the 4-pole at the rear; it stops at the connector...
    view full answer...
  • Recommended Plug and Play 5th Wheel In-Bed Trailer Connector for 1996 Dodge Ram 2500 Truck
    We do indeed offer a plug and play 5th wheel harness for your 1996 Dodge Ram 2500. I'd recommend the Curt # C56071. I've linked to a product description video featuring the Curt # C56071 wiring harness/7-way in-bed trailer connector.
    view full answer...
  • Curt 5th Wheel/Gooseneck Custom Wiring Harness Recommendation for a 2006 Dodge Ram
    Yes we do, check out the Curt 5th Wheel/Gooseneck Custom Wiring Harness # C56071. This is a very similar harness as the Curt 5th Wheel/Gooseneck Harness # C56070 that you referenced except it is confirmed to fit your 2006 Dodge Ram 2500.
    view full answer...
  • Will the Curt 5th Wheel and Gooseneck Wiring Harness # C56000 Fit on a 2006 Dodge 3500?
    The Curt 5th Wheel and Gooseneck Wiring Harness # C56000 that you referenced is not a confirmed fit for your 2006 Dodge 3500 Megacab. The specified part for your truck is Curt Harness # C56071 which installs by simply plugging in to your Ram's existing factory 7-way wiring. Your factory 7-way will remain active after installation. I have linked the written instructions as well as an installation video.
    view full answer...
  • Gooseneck Trailer Wiring Harness for 1995 Dodge Ram 2500
    Due to the age of the truck, neither Curt nor Tow Ready have a listing for the vehicle, but there are only two possibilities. The wiring harness that plugs into the rear of your OEM 7-way should have either a rectangular or a round connector on it. If it is rectangular, use the # C56071 you mentioned. If instead, your 7-way uses a round connector, use part # C56070. I have provided a photo showing both styles of connectors side-by-side. I have linked you to install details.
    view full answer...
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  • Is 7 Foot Long 5th Wheel Trailer Wiring Harness Long Enough for an 8 Foot Truck Bed
    The 7 foot long Curt fifth wheel wiring harness your purhcased, part # C56071, should fit just fine in your truck even with the 8 foot bed. However, you probably will only be able to reach the rear part of the bed behind the wheel wells. There is the 10 foot version, part # C56001, which will likely increase your options as to where in the bed you can install it due to the added length.
    view full answer...
  • 5th Wheel/Gooseneck In-Bed Trailer Wiring for a 2006 Dodge Ram 2500
    Take a look at the back of the trailer connector on your 2006 Dodge Ram 2500. If the connecter that plugs into the back of it is square/rectangular then # C56071 will fit. All of the 5th wheel/gooseneck in-bed harnesses have square plugs for this truck. Take a look at the video I have linked showing installation of a similar harness. If the connector that plugs into the back is round then you would likely need # 54701-007.
    view full answer...
  • Troubleshooting New 7-Way Where All Circuits Arent Active
    Sounds like you have blown some fuses or relays on your 2005 Dodge Ram and that is why only certain circuits work after the install of the # C56071. Check the owners manual and look for all of the towing related fuses and replace as necessary. You might try checking all of the circuits with a circuit tester liker part # PTW2993 on the 7-way to make sure that the problem is on the vehicle side of the equation. It could be that the 7-way is functioning properly and the light assemblies...
    view full answer...
  • Gooseneck/5th Wheel Trailer Wiring for the Bed of a 2006 Dodge Ram 3500
    I recommend going with a gooseneck wiring harness that has a 90 degree bend. The reason for this is because it makes installation easier because on some trucks there isn't a lot of space between the inner and outer bed side walls. Having an extra ground wire is not a bad thing. It helps ensure that the harness has a good ground connection. With that said you can't really go wrong with Hopkins harness # HM42137. I have linked a video to the right that shows how it installs. For a low-cost...
    view full answer...
  • Curt Custom 5th Wheel Rail Kit Fit for 2007 Dodge Ram 2500 4x4
    For your 2007 Dodge 2500 you will want the Curt Custom Fifth Wheel Installation Kit for Dodge Ram # C16420-204. You also may be interested in the Curt 5th Wheel/Gooseneck Custom Wiring Harness w/ 7-Pole Connector - 7' Long # C56071 to add a second 7-way to your vehicle for easy connection access.
    view full answer...
  • Replacement Trailer Connector for a 1999 Dodge Ram Pickup
    The Curt Replacement OEM USCAR Trailer Connector # C42JR will work if you still have the US CAR Connector on your 1999 Dodge Ram Pickup. If you're needing to connect this to a square style connector then the only option we have is the tee-in gooseneck style like the Curt # C56071.
    view full answer...
  • Correct Curt Gooseneck Trailer Hitch for a 2008 Dodge Ram 2500 Mega Cab
    The correct Curt EZr Double Lock Underbed Gooseneck Trailer Hitch with Installation Kit for a 2008 Dodge Ram 2500 Mega Cab is part # C60682 or if you're just looking for the installation kit it's part # C60660. Don't forget the Curt 5th Wheel/Gooseneck Custom Wiring Harness part # C56071 to complete your setup.
    view full answer...
  • Is Curt A20 Sliding 5th Wheel Hitch Compatible With 8 Foot Truck Bed?
    The Curt A20 sliding 5th Wheel Hitch # C16541 can absolutely be used in your long bed Ram. The sliding base isn't needed for a long bed, so it is a little heavier to install but will have no other issues. If you want new base legs for an easier installation you can use the Replacement Base Legs for Curt 5th Wheel Trailer Hitch # C16904. This swap out will make a 93 lb difference as well as give you a more solid hitch because there won't be as many moving parts. You may also want to...
    view full answer...
  • Where Does Curt 7-Way Trailer Connector C56071 Plug Into on a 1998 Dodge Ram
    If your 1998 Dodge Ram came with a factory installed 7-Way trailer connector, then you can use Curt harness # C56071. You would follow the factory connector's wiring harness forward under the vehicle to where it plugs in. The connector should be rectangular like those on the Curt harness. If they are a different shape, then you would need to use # 20024 which requires hardwiring into the vehicle wiring. You would need a circuit tester such as # PTW2993 or a meter if you have one to determine...
    view full answer...
  • 2007 Ram Pickup Brakes Lock Up When Gooseneck Cattle Trailer is Connected to 7-Way
    The brakes on your 2007 Ram Pickup should not activate when a trailer is connected. Since your truck's brakes are hydraulic there is no way for an electrically-operated trailer brake controller to interact with the truck's brakes. If it is the brakes on your trailer that are locking up when connected to the truck, then this could mean that the pin configuration for the trailer connector does not match the wiring on the trailer. It sounds like the auxiliary 12V trailer power and electric...
    view full answer...
    Image 1 for
  • Replacement 7-Way Trailer Connector for Curt Wiring Harness 56071
    Yes, you can get a replacement 7-Way receptacle only to fit in place of the one on # C56071. If you wanted a Curt brand you could use # C57101 which is a little fancier with its backup alarm and 4-Way flat built in. Or for something simpler, just a 7-Way, you could use # PK11893.
    view full answer...
  • Recommended Curt Slider Hitch for 2004 Dodge Ram 2500
    The Curt A16 5th Wheel Trailer Hitch w/ R16 Slider part # C16521 is the perfect option for a 2004 Dodge Ram 2500 when used with the Curt Custom Fifth Wheel Installation Kit part # C16420-204 which makes for no-drilling into the frame. I personally love the A16 because it has a secure dual jaw system which limits movement and an easy to remove head which saves your back. I also recommend the Curt 5th Wheel/Gooseneck Custom Wiring Harness part # C56071 to complete your setup.
    view full answer...
  • Best 5th Wheel Hitch and Wedge for a Reese Revolution Kingpin
    The Curt E16 5th Wheel Trailer Hitch - Slide Bar Jaw - 16,000 lbs # C16115 would be a great replacement for your Husky 16K Easy Roll Hitch. They have identical capacities and both mount on industry standard rails. Since you are using a Reese Revolution rotating pin box you will need the Sidewinder Wedge for Curt E Series 5th Wheel Trailer Hitches item # C16991. This prevents your Revolution king pin from pivoting in your hitch. To make towing with a 5th wheel easier I recommend adding...
    view full answer...
  • Will Curt E16 5th Wheel Hitch and Universal Install Kit Fit a 1997 Dodge Ram 1500 Short Bed
    Curt 5th wheel hitch and universal installation kit # C16116 will fit your 1997 Dodge Ram. But since you have a short bed I recommend the slider version, # C16616, so you will have more clearance when making turns while towing. If your truck has the factory 7-Way connector at the bumper you can add an in-bed harness # C56071, that will plug in line with the factory 7-Way. This allows you to have 2 functioning 7-Ways without the need of an extension. If you want to use an extension though...
    view full answer...

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Notes: May have damaged packaging or minor cosmetic blemishes.

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