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  1. Custom Fit Vehicle Wiring
  2. Hopkins
  3. 7 Round - Blade
  4. Fifth Wheel and Gooseneck Wiring
  5. No Tow Package
  6. Vehicle End Connector
Hopkins Endurance 5th Wheel/Gooseneck 90-Degree Wiring Harness w/ 7-Pole and 4-Pole Connector
Hopkins

Hopkins Endurance 5th Wheel/Gooseneck 90-Degree Wiring Harness w/ 7-Pole and 4-Pole Connector

$111.88
Custom Fit Vehicle Wiring

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Get a 7-way, RV-style connector in your truck bed for easy hookup of your fifth-wheel or gooseneck trailer. 90-Degree harness plugs in-line with factory wiring and retains use of your 7-pole connection. Connector also provides a 4-way flat socket. 1-800-940-8924 to order Hopkins custom fit vehicle wiring part number HM54FR or order online at etrailer.com. Free expert support on all Hopkins products. Great prices and Fastest Shipping for Hopkins Endurance 5th Wheel/Gooseneck 90-Degree Wiring Harness w/ 7-Pole and 4-Pole Connector. Custom Fit Vehicle Wiring reviews from real customers.
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  • Reviews (222)
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Hopkins Custom Fit Vehicle Wiring

Highlights

  • Custom Fit for Precision: The harness fits factory cutouts in Chevy and GMC trucks.
  • Dual Connector Options: Offers both 7-pole and 4-pole connectors for versatile use.
  • Weatherproof Design: Comes with corrosion-resistant terminals and rubber-coated wiring.
  • No Splicing Required: Easily installs by plugging into the OEM wiring harness.
  • 6 Feet Length: Provides ample length to route from bumper to truck bed.
  • Durable Construction: Made from ABS plastic for enhanced durability.

Features to know about

Effortless Hookups Every Time: Plug-and-Play Installation

Installing a trailer wiring harness can be a hassle, but the Hopkins Endurance 5th Wheel/Gooseneck Wiring Harness makes it a breeze. With a simple plug-and-play installation, you’ll be ready to connect your trailer in no time. Gone are the days of tedious cutting and splicing—just plug the T-connector between your truck's OEM wiring harness and the factory-installed 7-way connector.

Seamless Integration with Factory Design: Custom Fit for Modern Trucks

The perfect fit is here—the Hopkins wiring harness is custom-designed to fit seamlessly into the factory cutout of your truck bed. Whether you have a 2020 or 2022 Chevy Silverado, or a 2024 GMC Sierra, this harness fits right in without any modifications needed, making it look like it came straight from the factory.

Tackle Any Terrain: Durable, Weatherproof Construction

When you're on the road, you need equipment that can withstand the elements. The Hopkins wiring harness features enhanced weatherproofing with internal seals, corrosion-resistant terminals, and rubber-coated copper wiring. Whether you're facing rain, snow, or heat, this harness is built to last.

Adapt to Your Needs: Dual Connectivity Options

Whether you need a 7-way connector for your RV-style trailers or a 4-pole connector, this harness has got you covered. The twin connector option offers versatility for different types of towing situations. Keep the setup neat and tidy with both connector types readily available for use in the truck bed.

Peace of Mind with Reliable Electrical Connections: Secure 6-Foot Harness Length

The 6-foot harness gives you plenty of length to easily run the wiring from your rear bumper to the truck bed while keeping everything secure and out of the way. With wire gauges designed to handle various electrical needs—like purple/green/yellow/brown at 16 gauge and blue/red/white at 12 gauge—you can rely on consistent, dependable power connections.

Long-Lasting Performance: Secure, OEM-Quality Connectors

Skimping on quality isn’t an option when it comes to trailer wiring. That’s why the Hopkins Endurance harness features durable ABS plastic construction and OEM-quality connectors. This means a reliable fit and secure electrical connections every time you hit the road, ensuring no rattles or loose connections.

Specs

Dimensions

  • Harness length: 6'

Wire Gauges

  • Purple/green/yellow/brown: 16
  • Blue/red/white: 12

Warranty

  • Wiring harness: 3-year limited warranty
  • Connector: 1-year limited warranty

Note

Only one connector - a 4-way or a 7-way - can be used at a time because the covers on this socket will not open far enough to allow use of both plugs at the same time.

40975 Hopkins 7- & 4-Pole Connector

41158 Hopkins Endurance 5W/Gooseneck Wiring Harness - 7W RV - 6'

Item # HM54FR



This Product Fits The Following Vehicles



California residents: click here


Customer Satisfaction Score:

Ratings & Reviews

4.8

221 reviews
Get a 7-way, RV-style connector in your truck bed for easy hookup of your fifth-wheel or gooseneck trailer. 90-Degree harness plugs in-line with factory wiring and retains use of your 7-pole connection. Connector also provides a 4-way flat socket.

by:

the hopkins wiring harness was a perfect fit, just a plug & play hook up, very easy to install. looks good inside the bed.



by:

Easy installation as promised

Donald profile picture

Donald

2/8/2025

After a year it still works perfectly

JonG profile picture
Etrailer Expert

Jon G.

2/8/2025

@Donald Great to hear!


by:

Was pretty much plug and play



by:

My new truck came with gooseneck towing package except the harness inside the bed. I ordered the Hopkins prewired trailering harness from etrailer. After seeing the instructional video I attempted to do myself. I discovered it was easy as advertised. The connectors stubbornly unclipped and clipped but all worked. I found the wiring length was well protected and the perfect length. I did notice on the 2020 Silverado had extra wiring so that the clip on the bumper did not need switching out. I also discovered I did not need to remove spare as the access of the wiring behind bumper was plenty. I stuck with the video instructions. Tested perfect and done. What I liked about the product was that it fit and matched the other factory components. Literally no tools required except to cut zip ties.



by:

Fits perfect. Good how to videos. Takes about an hour.Been using for almost a year with no issues.



by:

This part was what I needed to complete my installation.



by:

Easily installed and fit as advertised



by:

Good quality plugs and connectors.
Worked
perfectly



by:

It does the job. I do find that the trailer light pigtail does not connect great. Sometimes it doesn't make a good firm connection and I have to fuss with it to get the trailer lights on.



by:
2024 Chevrolet Silverado 3500

Easy install. No instructions, but it's plug and play and everything is self explanatory.



by:

Perfect fit , works great and easy
I
nstall



by:
2020 GMC Sierra 2500

Didn’t come with the plug latch locks.



by:

Perfect fit for my 2020 Silverado 2500 HD…just as stated!



by:

Worked Excellent. Easy install. No longer need to run the cord over the tailgate, stays in the bed when connected to gooseneck hitch.

Don profile picture

Don

4/28/2023

No issues after a year. Still working great. Will purchase again when needed.



by:

Item arrived on time. The online install video was very helpful and made the actual install very easy. The only challenge was figuring out where to zip tie the cord.



by:

This wiring harness has worked very good on my truck



by:
Chevrolet

I own a 2020 Chevrolet 2500HD I purchased the harness for my fifth wheel which made it easier to keep the trailer plug in the bed versus laying over the tailgate. As described this harness is literally plug and play. Took me 15 minutes and I was up a running, I purchased this harness 1 year ago . I have not had any issues and definitely made the hook up a breeze.



by:
2020 GMC Sierra 2500

Came with no installation instructions had to go to YouTube for instructions, other than that everything was good.

Leroy profile picture

Leroy

8/12/2022

Working as it should



by:
2021 GMC Sierra 2500

The item itself is great. Plug and play, easy and quick install. The problem I had was etrailer failed to include the 4/7-way plug adapter that pops directly in the factory bed cutout (it is a separately packaged item included in this kit). I called them the next morning and they took care of getting it shipped out within the day. Problem is they shipped via usps and took almost one week to get to me. was looking forward to using it within that time frame, instead had to run the cable over my new truck’s tailgate… I believe that if a mistake is made it should be corrected as quickly as possible, not as cheaply as possible.



by:
Chevrolet

The park fit exactly as description said it would unfortunately I found when installing it that my truck already had a harness that would come up into the box for the trailer outlet to be used with gooseneck and fifth wheel trailers I later learned that all three-quarter tons in the 2020 year Chevy and GMC models come with that harness so I didn’t need to buy this $150 harness even though it fit and works great I could’ve done it with a 30 Dollar plug instead



by:
GMC Sierra

Fit in the factory location of my 2022 GMC Sierra pickup bed without modification. Easy installation and has been working fine ever since.



by:

Exactly what I needed to have wiring in the bed for my fifth wheel. Fit into the factory hole.

Mick profile picture

Mick

5/14/2021

Works perfect



by:

Still working no problems



by:
Ram 2500

GLAD I WENT WIHT eTRAILER. PERFECT FIT AND VERY EASY, PLUG-N-PALY. WORKED GREAT FOR REPLACING BLANK PLUG IN BED TO 5TH WWHEEL PLUG IN BED OF 2022 CHEVY 2500 HD



by:
2020 Chevrolet Silverado 2500

great product. install was a breeze except for getting the factory plug disconnected. It wasn't necessary but I dropped the spare tire for easier access for concealing the cables. Video available at etrailer was a big help. Keep up the good work etrailer.


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Show More Reviews

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