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  1. Custom Fit Vehicle Wiring
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FITS 2015 Ford F-150
Demco 5th Wheel/Gooseneck 90-Degree Wiring Harness with 7-Pole Plug - 10' Long
Demco

Demco 5th Wheel/Gooseneck 90-Degree Wiring Harness with 7-Pole Plug - 10' Long

Part Number: DM8555002
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$109.80
Retail:$144.98
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Custom Fit Vehicle Wiring
Confirmed to Fit
2015 Ford F-150

with factory 7-Way

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The best technical support and full custom fit vehicle wiring installation instructions. Great price F-150 custom fit vehicle wiring and expert service. Ford F-150, 2015 custom fit vehicle wiring by Demco are available from etrailer.com. For expert service call 1-800-940-8924 to order your Demco 5th Wheel/Gooseneck 90-Degree Wiring Harness with 7-Pole Plug - 10' Long part number DM8555002, or order online at etrailer.com.
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2015 Ford F-150 - Demco 5th Wheel/Gooseneck 90-Degree Wiring Harness with 7-Pole Plug - 10' Long

Highlights

  • Custom fit for easy connection: The 90-degree 7-pole plug fits tight spaces in trucks.
  • 10-foot insulated harness: Reaches from bumper to bed; perfect for large truck setups.
  • Plug-and-play installation: Connects to factory wiring without cutting or splicing.
  • Durable design: Features corrosion-resistant terminals and rubber-coated copper wiring.
  • Compatible with factory setups: Retains use of factory 7-pole at rear of the truck.
  • Versatile mounting options: Can be mounted in bed sidewall, tailgate post, or wheel well.

Features to know about

Effortless Bed Connections: 90-Degree 7-Way Wiring Harness

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.

Tight Space Installation Magic: Custom Fit Design

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.

Keep Your Factory Features: Retain Original Bumper Connection

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.

Extended Reach Without Compromise: 10-Foot Long Harness

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.

Built to Withstand the Elements: Weatherproof and Durable Materials

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.

Open Range Access: Wide-Opening Connection Lid

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.

Specs

Dimensions

  • Harness length: 10'

Warranty

  • 5-Year limited warranty

8555002 Demco 5th Wheel/Gooseneck 90-Degree Wiring Harness with 7-Pole Plug - 10'


California residents: click here


Customer Satisfaction Score:

Ratings & Reviews

4.8

70 reviews
Mount this 7-way, RV-style connector in your truck bed to simplify hookup of your 5th-wheel or gooseneck trailer. Harness plugs into existing wiring and retains use of factory 7-pole at the bumper. 90-Degree connector fits into tight spaces.

by:
2017 Ram 2500

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.



by:

great having extra plugs so my fifth wheel plug is not rubbing my tailgate paint

Joseph profile picture

Joseph

4/27/2025

working great well worth it. especially now that i haul doubles t each trailer has its own plug

Kate F. profile picture
Etrailer Expert

Kate F.

5/8/2025

@Joseph I am happy we had the part to make your life a little sweeter =)


by:

Perfect fit. Arrived to me quickly.
Thanks
Paula at etrailer!

Rick profile picture

Rick

5/6/2021

Great product!



by:
2017 GMC Sierra 2500

Nice heavy duty wiring and plug ends. Great instructions and pretty easy install.



by:
2013 Ford F-250 and F-350 Super Duty

Have not yet installed, but a well built part with clear and concise installation instructions. Plug and Play!

Charley S. profile picture

Charley S.

10/23/2017

Still happy with all of it.



by:

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



by:
2022 Dodge Ram Pickup

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.



by:
2016 Ford F-250-Super-Duty

Wiring harness was easy to install and is holding up nicely a year and half later. Great product and price too from etrailer.



by:
Ram 3500

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!!



by:
2006 Chevrolet Silverado

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.



by:

Not to difficult to install. It will require 2 people to get the bolts torqued down. Handles a 14000 lb fifth wheel with ease



by:
2016 GMC Sierra 2500

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.



by:

The hitch did not come with a cover to cover when not in use. I need a rain cap or cover



by:

Good product fast shipping, I highly recommend etrailer



by:

Bonjour, très bon produit, connexion fait pour mon camion et facile à installer.



by:

makes for a clean installation



by:

Easy install. Connected to factory harness and was in in about 1/2 hour.



by:
2021 Dodge Ram Pickup

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



by:

both products were shipped well packed and undamaged very impressed with the customer service and the shipping thanks again

Gregory profile picture

Gregory

4/4/2019

good quality very satisfied thanks



by:
2019 Ram 2500

The video was fantastic as well as questions being answered in regards to my specific truck. Thanks again..



by:

It is just as described. Shipping was very quick.



by:
2015 Ford F-250 Super Duty

Good product fast shipping



by:

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. profile picture

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.



by:

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.



by:

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


25
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Show More Reviews

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