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Hooking up your 5th-wheel or gooseneck trailer is easier than ever with the Demco 90-Degree 7-Pole Wiring Harness. It simplifies the process by adding a 7-way connector directly in your truck bed. This strategic positioning eliminates awkward stretches and tangles, making every connection quick and straightforward.
Concerned about fitting the harness in compact spaces? The ingenious 90-degree connector is engineered specifically to fit snugly into tight spaces, such as those found in the sidewall, tailgate post, or wheel well of your truck bed. You get a seamless, clutter-free setup without the hassle.
No need to sacrifice your factory 7-pole at the bumper! The Demco wiring harness plugs into your existing configuration and maintains all original functionalities. This dual connection offers the flexibility and convenience to tow from the bumper or the truck bed as needed.
Worried about the reach of traditional wiring harnesses? The Demco harness extends a full 10 feet, allowing you the freedom to connect even in the largest truck beds with ease. Its robustness ensures it stands the test of time, enhancing your towing setup without compromise.
Towing in inclement weather? You need a harness you can rely on. The Demco wiring harness is constructed with corrosion-resistant terminals and rubber-coated copper wiring, offering superior protection from the elements. Plus, the ABS plastic construction ensures a durable and trustworthy connection for years to come.
Say goodbye to fiddling with tricky connectors. The oversized lid opens a full 180 degrees, granting you effortless access to the connection point. This ease of access is a game changer when you're in a rush or dealing with low light conditions.
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Quality product. Only issue was the directions states to use a 2" hole saw. I had to ream hole to allow wire connector to pass. If I had to do it over, I would use a 2 1/8" of 2 1/4" hole saw. Other than that, I'm very happy.
great having extra plugs so my fifth wheel plug is not rubbing my tailgate paint
Perfect fit. Arrived to me quickly.
Thanks Paula at etrailer!

Rick
5/6/2021
Great product!
Nice heavy duty wiring and plug ends. Great instructions and pretty easy install.
Have not yet installed, but a well built part with clear and concise installation instructions. Plug and Play!

Charley S.
10/23/2017
Still happy with all of it.
Ordered Demco harness for 2011 super duty and for some reason wiring did not match my 5th wheel. Contacted e trailer and was told to ship back and they would send new harness which they did. Installed new harness and works great. Thanks for the help
The Demco 5th Wheel/Gooseneck p/u bed connection is just what I needed. I have always just draped the connection from the trailer over my tailgate and down to the 7pin connector on the bumper, but this is so handy to have and makes it a neater connection. Since my 2022 Ram 2500 came with the hole already provided in the bed wall, it was a breeze to install.
Wiring harness was easy to install and is holding up nicely a year and half later. Great product and price too from etrailer.
Easy quick install and plenty of cable to run this to any location within the bed of your truck. i installed this in my New 2020 GMC 3500 Denali in less than 30 minutes!! Perfect fit as always from etrailer!!
While I had to wait for the product because of it was back ordered, the wait was not unreasonable and the etrailer staff keep me updated the whole time. The harness is high quality. Service was top notch.
Not to difficult to install. It will require 2 people to get the bolts torqued down. Handles a 14000 lb fifth wheel with ease
directions are miss leading . 2" hole isn't big enough as another tab has been added which makes swinging the plug thru the hole impossible . I have a dremel tool at home and ground a tab area for the tab to go thru and was easy as pie then . Plug hook up easy and all was good after getting it thru the hole.
The hitch did not come with a cover to cover when not in use. I need a rain cap or cover
Good product fast shipping, I highly recommend etrailer
Bonjour, très bon produit, connexion fait pour mon camion et facile à installer.
makes for a clean installation
Easy install. Connected to factory harness and was in in about 1/2 hour.
great price, very good product, it is a plug in, no extra wiring needed,
put this on my 2021 dodge ram, took about an hour, awesome
both products were shipped well packed and undamaged very impressed with the customer service and the shipping thanks again

Gregory
4/4/2019
good quality very satisfied thanks
The video was fantastic as well as questions being answered in regards to my specific truck. Thanks again..
It is just as described. Shipping was very quick.
Good product fast shipping
Need to look at [online] videos to see how to get the old connection apart. Hard to tell under the truck. Product is fine.

Jenny N.
3/29/2022
I recommend watching the video install that we have on a 2016 Ford F250 at mark 2:51 to see how we access the back of the seven way.
Ordering was great, delivery was quick, but they dumped all the boxes in the middle of my drive and left, without letting me know. They couldve been stolen. Prices are high compared to others and previous orders I was able to get discounts. The hitch box was completely destroyed, taped and half open in transit. Hopefully no parts are missing. Something has to change. Destroyed boxes equals destroyed products.
Missing a critical part in the box - bed bracket for cable to plug into. Customer Service was great and reordered and ask for warehouse to open box and make sure bracket and cable in new box. Waiting on email and new delivery
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Joseph
4/27/2025
working great well worth it. especially now that i haul doubles t each trailer has its own plug