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Curt Universal 5th Wheel/Gooseneck 7-Way Extension - 7' Long

Curt Universal 5th Wheel/Gooseneck 7-Way Extension - 7' Long

Item # C56080
Our Price: $56.55
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Custom Fit Vehicle Wiring
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Extension plugs into your existing 7-way, RV-style connector to route functionality from the rear of your vehicle to your truck bed for quick, easy hookup of your 5th-wheel or gooseneck trailer. 1-833-496-1390 to order CURT custom fit vehicle wiring part number C56080 or order online at Free expert support on all CURT products. Great prices and Fastest Shipping for Curt Universal 5th Wheel/Gooseneck 7-Way Extension - 7' Long. Custom Fit Vehicle Wiring reviews from real customers.
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  • Reviews (97)
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  • Videos (1)
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  • Why etrailer?

CURT Custom Fit Vehicle Wiring - C56080

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

Extension plugs into your existing 7-way, RV-style connector to route functionality from the rear of your vehicle to your truck bed for quick, easy hookup of your 5th-wheel or gooseneck trailer.


  • Provides 7-way, blade-style connector in your truck bed for hassle-free hookup of 5th-wheel and gooseneck trailers
    • Plugs into existing 7-way, RV-style connector - no cutting or splicing
  • 7' Long, insulated wiring harness reaches from rear bumper to truck bed


  • Harness length: 7'
  • Limited 1-year warranty

56080 Curt Fifth Wheel and Gooseneck Universal Extension - 7-Way RV Blade - 7' Long

California residents: click here

Video of Curt Universal 5th Wheel/Gooseneck 7-Way Extension - 7' Long

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Curt Custom Fit Vehicle Wiring - Fifth Wheel and Gooseneck Wiring - C56080 Review

Today, were reviewing part number C56080 from Curt. This is Universal 5th Wheel and Gooseneck 7-way Extension. The cable is 7 feet long and of course, its insulated and you simply plug the round end into your existing RV style connector and then this 7-way plug stays in your truck bed and its available for you when youre ready to tow your 5th wheel or gooseneck. This comes with a limited one year warranty. There you have it for part numb C56080 from Curt, the Universal 5th Wheel and Gooseneck 7-way Extension.

Customer Satisfaction Score:

Customer Reviews

Curt Universal 5th Wheel/Gooseneck 7-Way Extension - 7' Long - C56080

Average Customer Rating:  4.8 out of 5 stars   (97 Customer Reviews)

Extension plugs into your existing 7-way, RV-style connector to route functionality from the rear of your vehicle to your truck bed for quick, easy hookup of your 5th-wheel or gooseneck trailer.


The cable was delivered promptly and it functions as advertised. Be aware that it is a thick cable if you are planning on running it through tight openings or sharp turns. I bought it mainly to allow connecting to a trailer while not hitched to it and to allow in-line balasts to be on a cable rather than putting a strain on the socket on the tow vehicle. But I also wanted to check when brake lights came on when coasting in various modes of a PHEV. I gently left the tailgate resting on the cable rather than closing it for that test.


The wiring harness arrived just as adve rtised.


I would rather have had the female end more of a rounded design but I realize the screw in may be the only option after all it is an extension cord basically. It still worked as expected.


It wasn't what I explained i needed. The product is perfect. What I asked for was an 8 ft that I could hardwire to the trailer that had the plug on the truck end.

It sounds like you are looking for a trailer side plug. I recommend part # H20046
Hopkins 7-Way RV Style Connector with Molded Cable - Trailer End - 8' Long - RV Standard
-- Etrailer Expert Heather A - 04/01/2022


Works perfectly. No problems.


Good quality, just what I needed

Great! I tow a few times a week, no problem ever.
Richard - 05/20/2022


Great product and a great price!


Pretty pathetic service from etrailer. Order place on Aug 25th with ETA of the following Friday (1o days). But nope, I wait. It finally (and supposedly ships) on Sept 7th (13 days later). On Sept 14th I received a confirmation that my items were delivered, but nope. Not to my house anyway. Avoid these folks if you want something to arrive when they say it will arrive.

Thank you for the review. Our customer service team should be reaching out to you in the near future.
-- Etrailer Expert Brooke M - 09/23/2021


Exactly what was needed


When boondocking for a extended time, I tried hooking the supplied cord from my new tent camper to my truck's socket, but it was impossible with out collapsing the end of the tent which extends over the tongue. The supplied cord was just 4 inches too short, how annoying! With this extension, I can now recharge the batteries without having to partially disassemble the camper.


This extension is well made. I have to admit I was really disappointed that they choose to save a few pennies and not include screws or bolts for the female end.


I had a great experience. Ordered the wrong cord, realized it a day later. Was able to cancel the order, and order the correct cord. It showed a day early. Very good customer service.


Works great, no worry of unconnected wiring from too tight harness


Good product. Fit perfectly. And as always Tim, The good folks at etrailer did a great job getting it to me. I have bought several items from etrailer and they all have been good quality components.thx.

Still holding up.
Steve - 10/29/2019


I bought the adapter based on advice.
The 7-Pole Round Trailer Connector Adapter # PK12727 is NOT the same as the Lance plug. Adapter is good quality and arrived quickly bu unfortunately would not work for my Lance camper factory plug.

If the camper has a 7-way round pin, youll need an adapter like part PK12727.
-- Etrailer Expert Mike L - 10/02/2018


Well made, should work well for my condition where I need a longer 7pin round cord. Appears to be constructed of quality materials.


Arrived as described. I order all my trailers stuff form here. Great company, great help and very friendly


We purchased a new 5th wheel so had to upgrade the wiring harness. This harness was a simple plug and play and works great with our new 5th wheel. My husband leaves it plugged into his wire harness under the bumper and has it run up between the tailgate and the back of the bed and just leaves it in his truck. We do have a cover on our truck so it is not exposed to the elements. I would highly recommend this wiring harness to anyone.


This is the cats meow. Took maybe 15 minutes to install, most of which was drilling the hole. Connections were spot on. After a year still working great. If you haul a 5th wheel, gooseneck or just need an in bed ug I highly recommend this item.


Decent hitch but etrailer again shorted me parts.
I contacted etrailer and told them the parts that were shorted.
They did not take responsibility and blamed it on the manufacture.
This is now the second time I have had problems with etrailer in the last 6 months.
Now my customer is pissed that the hitch will take an additional 1 week for the missing parts to be shipped.
I am done with etrailer.


The 7-pin extension is the perfect solution, allowing me to work on the trailer lights and brakes while at home. I am impressed with the selection of products available and will undoubtedly make more purchases throughout the year!


Appears to be well made. Price was right and as always the service from etrailer was second to none. I'm sure by the look of it that it will perform as intended.

Works as it should. Good quality ends.
IP - 09/19/2018


Worked great!
I cut the unit in half,
and connected one side to my electric jack and the receptical side mounted to my battery box
Excellent product!!


Easy to connect to existing wiring harness, allows for extra space. Very sturdy connection.


This extension cord is what I've been looking for. Product came to post office very quickly. Bought this for our 5th wheel and to move electrical hookup from bumper to bed without cutting more holes in bed. 5th wheel is still under wraps for the winter and I haven't installed yet. Will be a couple of months before actual use. The cord is heavy duty construction

Show More Reviews

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

  • 7-Way Extension To Avoid Connection Ripping Out Of Socket
    The Curt Universal 7-Way Extension # C56080 will give you an additional 7 feet of extension to ensure your connection will not rip out of the socket. Extension plugs into your existing 7-way, RV-style connector to route functionality from the rear of your vehicle to your trailer.
    view full answer...
  • Truck Bed Camper 7-Way Recommendation for 2018 Ford F-450
    Sounds like you are looking for a 7-way to install in the bed of your truck for the 7-way of your camper to attach to. For that you'd want the Tow Ready part # 20110-010 which will install easily and give you the 7-way you are needing.
    view full answer...
  • Will Curt Universal 5th Wheel/Gooseneck 7-Way Extension # C56080 Fit a 2008 GMC Sierra
    You can use Curt Universal 5th Wheel/Gooseneck 7-Way Extension # C56080 provided that your 2008 GMC Sierra has a functioning 7-Way trailer connector. The wire gauge is appropriate for the functions the 7-Way was designed for (trailers, campers, and so on).
    view full answer...
  • What Trucks Will Curt Universal 5th Wheel/Gooseneck Extension # C56080 Fit
    The Curt 5th Wheel/Gooseneck 7-Way Extension # C56080 referenced in your question is a universal product that will plug directly to an existing 7-Way RV-style connector. Unlike other fifth-wheel wiring harnesses that plug in line at the back of a factory 7-Way, this will go right to the actual 7-Way connector, so it will work with any truck that already has a 7-Way installed. I have attached a short video demonstration on this product that you can also check out.
    view full answer...
  • Will 7-Way Trailer Connector Extension Charge a Trailer Battery
    The Curt Universal 7-Way Extension, part # C56080, plugs into your truck's existing 7-way and moves it inside the truck bed. This makes it easier to hook up a fifth wheel or gooseneck trailer. The 12 volt pin on your existing 7-way will provide power to your trailer's battery through the extension, however it isn't going to charge a battery. The current from a 7-way connector only maintains the charge on a battery.
    view full answer...
  • Typical Uses for Curt 7-Foot Universal 7-Way Extension Cable C56080
    Curt part # C56080 is a 7-foot extension cable in the 7-way RV blade style connector format. The male plug end is just like what many trailers with electric brakes are equipped with; and the female socket end is the same as a 7-way socket that would be found on a vehicle that is set up for towing such a trailer. This item carries trailer lighting, trailer braking power and 12V auxiliary power signals from a vehicle to a trailer. This part works as an extension cable for any application...
    view full answer...
  • Length of Curt Universal 5th Wheel/Gooseneck 7-Way Extension # C56080
    The Curt Universal 5th Wheel/Gooseneck 7-Way Extension # C56080 referenced in your question features an end to end length of 7 feet. This extension will plug right into your existing 7-Way RV-style connector so you can route it to the bed of your truck for simple hookup with your trailer. I have attached a short video demonstration on this product that you can also check out.
    view full answer...
  • Recommend Hitch Extender for 2017 Ram 2500 and 2006 Pioneer Trailer with 6400 lb GVWR
    The Curt Hitch Extension and Reducer for 2-1/2" Trailer Hitches - 24" to 34" Long # C45048 will allow you to leave your tailgate down and still tow a trailer. It is rated for different capacities based on the length used, so you will need to make sure your trailer and weight distribution system work within its rated capacities. You will also want the Curt Universal 5th Wheel/Gooseneck 7-Way Extension - 7' Long # C56080 which can be trimmed to length if desired.
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  • Recommended 7-Way Trailer Connector Extension for a 2014 Ram 2500
    What I recommend is the Curt universal extension # C56080. It will plug directly into your existing 7-way connector and provide you a length of 7 feet. If you only need a few more inches of play, the adapter # C57003 you referenced will work fine. I included the installation instructions for you too.
    view full answer...
  • Wiring Between RV and Flat Towed Vehicle Pulls Out When Turning
    If the distance is too far between the connectors on the motor home and vehicle then a straight cable would not help much unless it was a longer cable. You can try moving the location of the cable so there is enough slack to make turns without it pulling loose. Another option is to extend the 7-Way using something like # C56080. You probably would not need the full 7 feet of length this harness has but it would definitely be enough to prevent the cable from pulling out on turns. Currently,...
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  • 5th Wheel/Gooseneck Trailer Wiring Harness for a 1997 Ford F-250 Heavy Duty
    Gooseneck/5th Wheel Trailer wiring harness # 40167 fits 2002 - 2004 Ford F-250 and F-350 Super Dutys with factory 7-way connectors. It will not fit a 1997 Ford F-250 heavy duty. There are currently no in-line harnesses that will fit. But what you can use is # 20027 or # C56080. Either of these will plug into the existing 7-Way and the long cable allow you to put the 7-Way in the truck bed. These harness just do not plug in line at the backs of the 7-Way like the other harnesses.
    view full answer...
  • 7-Way Blade Style Extension for 1991 Jayco Trailer
    I do have a 7-Way extension that you can use but # HM47085 will not work. You will need # C56080. It may be more length than you need at 7 feet long but it is a true 7-Way extension. The extra length could be held together with wire ties or you could cut it to the length needed and reattach the wires to the connector.
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  • 7-Way Trailer Harness Extension That is 2 Feet Long
    For a 7-Way extension like the Curt # C56080 that you referenced that's just over 2 feet long we have the TorkLift Wiring Harness Extension # TLW6024. This will extend the 7-Way on your truck by 28 inches. I have attached a short video review that you can check out as well.
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  • Does the Curt 7-way Extension part # C56080 Carry a Circuit that Could Charge a Trailer Battery
    If you have a 7-way on your tow vehicle that has the 12 volt accessory circuit active and a 7-way on your trailer that has the 12 volt circuit run to the positive side of the battery on your trailer then yes, the Curt 7-way Extension part # C56080, when plugged in between your trailer and tow vehicle will put a maintenance charge on your trailer battery. If you are looking for something to charge a dead trailer battery you would need a battery charger that would plug into a wall outlet...
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  • Extension for 7-way Trailer Harness
    The Curt Universal7-Way Extension # C56080 will give you 7 extra feet of extension to connect your 2019 Toyota 4Runner to your 2015 Airstream. If you want something shorter, we also have the 2 feet long TorkLift Wiring Harness Extension # TLW6024.
    view full answer...
  • Availability of 7-Way Extension for Buyers Products 3370093500 Powered Trailer Jack
    Extensions are indeed available. For a 7 foot long extension, use # C56080 or for 10 foot extension use # TLW6510. I've linked you to some product description videos for the extensions I mentioned.
    view full answer...
  • Can the Curt 7-Way Extension be Used with a PowerMax Converter to Power Trailer
    Instead of using the Curt Extension # C56080 I recommend using the Bargman # 50-87-009. This comes with an extra 2' of wiring and it already has the female end disconnected so less work on your part! Then the correct wires that you need are the black and white wires. Black is for power and white is for ground. Be sure to follow the instructions for your PowerMax during the installation.
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  • What Gauge of Wires Are Used in the Curt Universal 7-Way Extension 56080
    The spoke with Curt about the Curt Universal 5th Wheel/Gooseneck 7-Way Extension part # C56080 and they informed me that the green (right turn/stop light), yellow (left turn/stop light), brown (running light), and purple (reverse light/lockout) wires are 14 gauge. The blue (brake output), black (12 volt power) and white (gound) wires are 12 gauge. I am sure the boot on the back of the 7-Way Super Sealed Connector part # 50-87-009 could be trimmed down but you would be opening yourself...
    view full answer...
  • What do I need to Install a 7-Way Connector in the Bed of a 2000 Ford F-350 Super Duty
    What you will need for your 2000 Ford F-350 is a 4-pole hardwire kit # 18252, universal installation kit # ETBC7 and universal 5th wheel/gooseneck 7-way extension # C56080. Install the # ETBC7 (provides 7-way connector) and # 18252 (provides 4-way flat) at the rear of your truck. The Curt 5th wheel/gooseneck 7-way extension # C56080 will install in the location of your choice in the truck bed. I have provide a few links to help guide the installation.
    view full answer...
  • 5th Wheel Hitch Mounting Rails for a 2021 Ford F-150 Short Bed
    For your 2021 Ford F-150 with the 5'-1/2" foot bed we have the Reese Quick-Install Custom Outboard Installation Kit w/ Base Rails # RP56034-53. These rails are 5" longer than industry standard to allow mounting outside of your frame. The rails are industry standard when it comes to mounting your hitch. As long as your hitch is industry standard it will work with these rails. You can also add the Curt Universal 5th Wheel/Gooseneck 7-Way Extension # C56080 to route functionality from the...
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  • Hitch Extender Compatible With Truck Bed Camper and Trailer Towing 19 Foot Aluminum Fishing Boat
    For your 2004 Chevy Silverado 2500HD, the Curt Trailer Hitch Receiver - Class V Commercial Duty - 2-1/2" # C15703 is a confirmed fit. This hitch will allow you to use the Titan Hitch Box Extension for 2-1/2" Trailer Hitches, 41" - 48" Long # RP45018. This will give you a towing ability of 4,000 lbs at full length so your aluminum 19 foot fishing boat, motor, and trailer should be well under the rated capacity. I then recommend using wiring extension # C56080 which can be cut down from...
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  • 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...
  • How to Add Gooseneck Wiring to 1997 Dodge Ram 1500 Without Factory Wiring Harness
    If your 1997 Dodge Ram 1500 has no type of factory trailer wiring at all then you'll need first to install a 4-pole harness like # 118329. This is a simple plug-in harness that installs at your tail light assemblies with no cutting or splicing of wires. You'll then convert that to a 7-way blade type RV socket using our # ETBC7 trailer brake controller installation kit. This kit includes a 7-way that plugs in to the 4-pole. The extra circuits will be connected using the supplied wiring,...
    view full answer...
  • Adding a 7-Way in the Bed of a 1999 GMC 2500
    To add a 7-Way trailer connector to the bed of your 1999 GMC truck you have some options. First, if the truck came with a factory 7-Way then you can just use # C56080 which will plug into the 7-Way at the rear of the truck. If your truck does not have a 7-Way then you would first need to install one. To do this you can use # ETBC7. For this to install you would need to have a 4-Way flat trailer connector at the back of the truck. If you do not then you can install one, # 118315, and then...
    view full answer...

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