Arrives before Christmas 
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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.
Features:
Specs:
California residents: click here
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
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.
Average Customer Rating: 4.8 out of 5 stars (115 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.I was in a real pinch and I needed one of these right away when nobody else kept them in stock. Got it in two days. Great job etrailer.
Solved my problem without a bunch of rewiring. Now I can pull my trailer.
Works great, no worry of unconnected wiring from too tight harness
Excellent product, very strong, great quality steel and grade bolts.
Installed it on my 2002 Dodge Ram. Very simple, and it took about 3 hours start to finish. I applied Red threadlocker to all nuts and bolts, and checked them 3 months after installation. I didn't connect the quick release arm, due to my bed having inner wheelwell skirts, but I just put a ziplock bag over my ball when not towing. The kit works great, the ball is high grade alloy. I was slightly concerned because I tow alot over the Rockies, but it's been very reliable. Thanks B&W, I recommend you to my friends out there!
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.
Excellent service and the perfect solution to 7 way cord unable to reach hook up from goose neck to truck! Thanks!
Great place to go when you need RV PARTS AND THINGS
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.
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.
Heather A.
4/1/2022
It sounds like you are looking for a trailer side plug. I recommend part # H20046.
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.
Brooke M.
9/23/2021
Thank you for the review. Our customer service team should be reaching out to you in the near future.
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.
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.
Steve
10/29/2019
Still holding up.
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.
As usual I promptly received what I ordered, all in the condition I would hope for... perfect.
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!
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
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!!
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.
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.
great quality.
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.
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.
Ip
9/19/2018
Works as it should. Good quality ends.
The extension cable if perfect for the gooseneck trailer to semi truck 5th wheel. No need to cut up and extend the trailer cable.
Exactly what I needed and had been looking for. My trailer wiring wasn't long enough for my new truck and I need an extension. Thought about making one myself but this was so much better. I won't hesitate to look on your web site for any future needs.
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Mike L.
10/2/2018
If the camper has a 7-way round pin, youll need an adapter like part PK12727.
Helpful Links
Wiring/Pollak/PK12727.html