bing tracking image
  1. Custom Fit Vehicle Wiring
  2. Hopkins
  3. Custom Fit
  4. Fifth Wheel and Gooseneck Wiring
  5. 7 Round - Blade
  6. 6 Feet Long
Hopkins Endurance 5th Wheel/Gooseneck 90-Degree Wiring Harness w/ 7-Pole and 4-Pole Connector

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

Item # HM54FR
Our Price: $116.57
Custom Fit Vehicle Wiring

Will this fit?

To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.

Shipping Weight: 3 lbs
Add to cart
In Stock
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

In Use/Installed

Customer Photos

Need help with installation?
Locate installers near me
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.
  • All Info
  • Reviews (205)
  • Q & A (0)
  • Photos

Hopkins Custom Fit Vehicle Wiring - HM54FR

  • Custom Fit
  • Fifth Wheel and Gooseneck Wiring
  • 7 Round - Blade
  • Hopkins
  • 6 Feet Long

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.


Features:

  • 7-way, blade-style connector installs in your truck bed for hassle-free hookup of 5th-wheel and gooseneck trailers
    • Connector fits into the factory cutout in your truck bed
  • Simple installation - no cutting or splicing required
    • Plug the T-connector in between the OEM wiring harness and your vehicle's factory-installed 7-way connector
    • Run the 6' long wiring harness from the rear bumper into your truck bed
  • Enhanced weatherproofing with internal seals, corrosion-resistant terminals and rubber-coated copper wiring
  • Socket provides 7-way and 4-way connectors
    • Socket made of durable ABS plastic
  • Includes dielectric grease packet and nylon ties for installation


Specs:

  • 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'



This Product Fits The Following Vehicles




Customer Satisfaction Score:


Customer Reviews

Hopkins Endurance 5th Wheel/Gooseneck 90-Degree Wiring Harness w/ 7-Pole and 4-Pole Connector - HM54FR

Average Customer Rating:  4.8 out of 5 stars   (205 Customer 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:

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:

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:

Easy installation as promised



by:

This wiring harness has worked very good on my truck



by:

This was easy to install and works grea t.



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:

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

Don

4/28/2023

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



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:

Unfortunately it was not the right product for my 2022 gmc 3500hd. It did not fit the box factory cut out as in the video. It does work but not the product displayed in the videos.

Etrailer Expert

Jenny N.

5/23/2023

It is unusual to hear that it did not fit into the factory cut out on your 2022 GM Sierra 3500. Would you be able to send a picture of how it fit in your truck bed.

David

5/24/2023

Here are a few of the pictures. It is my guess they probably just sent me the wrong piece.

Etrailer Expert

Jenny N.

5/24/2023

The pictures really help and I am now closer to what may have happened. Did you receive part # HM40975 with this wiring kit?

David

5/24/2023

No, I did not.

Etrailer Expert

Jenny N.

5/24/2023

Yes, this makes more sense. The harness should have come with it and it is that connector that would fit into the cut out in the bed. I am asking our Customer Service team to review and reach out to you.



by:

Great product



by:
2022 Chevrolet Silverado 2500

The lead is like 5 feet too long to go in the factory location for the plug



by:
2020 Chevrolet Silverado 2500

Fast check out,fast delivery



by:

Perfect excellent transaction great product AAA+



by:

etrailer customer service is incredible- I’ve been doing business with them for years - they always come through! Special shout out to Eric!



by:

I am extremely happy with the purchase. Very durable harness and easy to install.



by:

Easy 15 minute plug and play install in our 2022 Chevrolet Silverado 3500 LT and it works great!



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:

Quick delivery and it worked for my tru ck.



by:

Easy installation



by:

plug and play simple install and great support

Dennis

1/5/2023

working well no problems at all very easy install



by:
Chevrolet Silverado

Plug and play! Would never know it's not factory on my truck (2022 Silverado 3500.)



by:
2020 GMC Sierra 2500

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

Leroy

8/12/2022

Working as it should



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:

Easy to install and works great.


25
205
Show More Reviews

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

  • What Is An OEM Prep Package And How Do I Know If I Have It
    The OEM prep package consists of 4 "pucks" in the bed of the truck that will allow you to drop in puck style hitches for easy installation and removal, that gives you a completely clear bed when not in use. The B&W Companion OEM 5th Wheel Hitch w/ Slider for Chevy/GMC Towing Prep Package # BWRVK3775 you were looking at has four puck style feet that drop into the pucks and a lever on each leg that simply turns to lock or unlock the leg in the puck. The prep package will typically also...
    view full answer...
    Image 1 for Image 2 for
  • Will The Curt 7-Way Opening Cover Plate Fit a 2023 GMC Sierra 2500HD?
    Yes, the Curt 7-Way Opening Cover Plate # C29CR will fit your 2023 GMC Sierra 2500. This will allow you to install the Curt 5th Wheel/Gooseneck Custom Wiring Harness # C56070 into the factory cutout. We also have the Hopkins Endurance 5th Wheel/Gooseneck 90-Degree Wiring Harness # HM54FR which uses the factory style connector. This will provide a cleaner look in my opinion.
    view full answer...
  • In Bed 7 way And 4 Pole Connector For A 2021 GMC Sierra 2500
    I'm sorry for the troubles you're having but I believe I have a solution. If you want to just add a 4 pole, I recommend using the Hopkins Endurance 5th Wheel/Gooseneck 90-Degree Wiring Harness w/ 7-Pole and 4-Pole Connector # HM54FR. This will plug into the existing 7 way connector at the rear of your truck, and run to your truck's bed, giving you in bed access to a 7 way and a 4 pole trailer connector. Utilizing this harness will still allow you to use the 7 way at the rear of your vehicle.
    view full answer...
  • B&W Patriot Sliding 5th Wheel Hitch & Standard Width Trailers
    That's a good question, so I reached out to my colleague about towing a very wide trailer with the B&W Patriot 5th Wheel Trailer Hitch with Slider # BWRVK3270. They said this bullet point wasn't specific to the Patriot and was a way of saying that the best way to get added turning clearance with a very wide trailer is to use an extended pin box like a Sidewinder as opposed to a sliding hitch. That said, there isn't any issue using the Patriot # BWRVK3270 with your standard-width trailer;...
    view full answer...
  • 5TH Wheel Rail Kit For Installing Curt Q20 Slider In 2024 Chevy Silverado 2500 Short Bed
    The Curt Custom Fifth Wheel Installation Kit # C16429-204 contains the 5th wheel rails and mounting kit you need to mount inside your 2024 Chevrolet Silverado 2500. This will allow you to install your Curt A20 Slider 5th Wheel Trailer Hitch # C16541. I recommend also installing the Hopkins Endurance # HM54FR when you install the bed rails. This will provide you the same style factory connector in the bed of your Silverado.
    view full answer...
  • Recommended Sliding 5th Wheel Hitch for 2021 Chevy Silverado 3500 Short Bed
    The puck system is not something that is there unless you have the 5th wheel prep package on your 2021 Chevy Silverado 3500, so you will need to get a rail system as well as a 5th wheel wiring harness in order to use a 5th wheel hitch. Since your Chevy 3500 is a short bed, you will need a sliding hitch, and while you mentioned you were looking at 25k hitches, there aren't any with that capacity for your short bed, but there is a 21,000 lb option that is one of the best hitches available,...
    view full answer...
  • Auto Slide 5th Wheel Hitch Recommendation for 2020 GMC Sierra 2500 Short Bed
    We've got exactly what you need. I'd recommend the Demco Hijacker Auto Slide, part # DM8550034 for an 18K capacity or # DM8550035 for the 21K capacity. Either hitch would need the # DM6333 adapter to join the hitch to the pucks. During turns, the hitch head will automatically slide rearward for proper clearance between the front of the 5th wheel and the truck cab, and after the turn is complete, the hitch will automatically return forward. I'll link to a demonstration video that will tell...
    view full answer...
  • B&W Turnover Gooseneck Hitch and Companion 5th Wheel Hitch for a 2022 Chevrolet Silverado 2500
    For your 2022 Chevrolet Silverado 2500 you will need the Custom Underbed Installation Kit for B&W Companion 5th Wheel Trailer Hitches # BWGNRK1020-5W. B&W has confirmed that this will fit the 2022 model year without the factory puck system. This will let you install the B&W Companion 5th Wheel Trailer Hitch # BWRVK3400-5W and doubles as a heavy-duty Turnoverball gooseneck trailer hitch. You may also want the Hopkins Endurance 5th Wheel/Gooseneck 90-Degree Wiring Harness # HM54FR. This...
    view full answer...
  • 5th Wheel Base Rails For 2022 Chevy Silverado 2500 For Curt A20 Sliding 5th Wheel Hitch
    We do indeed have 5th wheel base rails that fit your 2022 Chevy Silverado 3500 and work with a Curt 5th wheel hitch. The base rails and install kit are also from Curt, and I verified with the manufacturer for you that they fit your truck; you can also choose from either a gloss finish or a carbide finish for the rails: - Carbide Finish: Curt Custom Fifth Wheel Installation Kit for Chevy/GMC Truck # C16429-204 - Gloss Finish: Curt Custom Fifth Wheel Installation Kit for Chevy/GMC Truck...
    view full answer...
  • Does B&W Companion BWRVK3710 Fit The 2022 Chevrolet Silverado 2500 Long Bed With OEM Pucks
    Yes, the B&W Companion OEM Fifth Wheel Hitch # BWRVK3710 you mention does fit your factory pucks on your 2022 Chevrolet Silverado 2500 long bed. To make unplugging and plugging your 5th wheel, I recommend the Hopkins Endurance 5th Wheel/Gooseneck 90-Degree Wiring Harness w/ 7-Pole and 4-Pole Connector # HM54FR. This will allow you to add a 7 way in the bed of your truck for ease of access when plugging and unplugging your 5th wheel.
    view full answer...
  • Recommended 5th Wheel Trailer Wiring Harness for 2021 Chevy Silverado 2500
    I'd recommend the Hopkins # HM54FR which would provide both a 7-way and a 4 pole trailer connector in the bed of your Silverado. You'll remove the factory knockout or fake plug in the inside wall of the bed, and install the harness as outlined in the video I've linked for you. The # BWGNRK1057 B&W Turnover Ball gooseneck hitch you'd looked at wouldn't be a fit for your 2021 Silverado 2500. You'll want to use the # BWGNRK1020-5W.
    view full answer...
  • 5TH Wheel Sliding Hitch For Curt EZr Double Lock Gooseneck On 2022 Chevrolet Silverado 2500 6.5 Bed
    To attach a 5th wheel hitch to the Curt EZr Double Lock Underbed Gooseneck Trailer Hitch # C65HR that you are installing in your 2022 Chevrolet Silverado 2500 you will need the Curt X5 5th-Wheel Base Rail Adapter Plate # C16220. This adapter will drop into the EZr gooseneck hitch a provide you with a set of industry standard rails for your 5th wheel. I recommend the Curt A20 5th Wheel Trailer Hitch # C16541 for your Silverado. This is a manual slider as you cannot use an automatic slider...
    view full answer...
  • Parts Needed For Installing Curt Q20 On 2022 Chevrolet Silverado 2500 Long Bed Without Factory Prep
    First you will need the Curt EZr Double Lock Underbed Gooseneck Trailer Hitch # C65HR for your 2022 Chevrolet Silverado 2500. This will allow you to use the Curt X5 5th-Wheel Base Rail Adapter Plate # C16220 with your Curt Q20 5th Wheel Trailer Hitch # C16130 and retain your clean bed. The Hopkins Endurance 5th Wheel/Gooseneck 90-Degree Wiring Harness # HM54FR will allow you to install the factory style 7-way in the bed for connecting your 5th wheel wiring.
    view full answer...
  • Recommended 5TH Wheel Hitch System For a 2021 GMC Sierra 2500 Short Bed Without Factory Puck/Prep
    I have another recommendation for you as I have heard a lot of complaints about the Curt CrossWing # C32DR and the amount of noise it makes. I also do not feel the offset is going to be enough to prevent damage between your truck and trailer when maneuvering. I recommend going with the Demco Autoslide 5th Wheel Trailer Hitch # DM8550022 on your 2021 GMC Sierra 2500. This uses the Demco UMS System # DR37FR which places the rails under your bed so you can maintain the clean bed when you...
    view full answer...
  • In Bed Trailer Wiring For 2021 Chevrolet Silverado 2500HD
    You will actually be needing the Hopkins Endurance 5th Wheel/Gooseneck 90-Degree Wiring Harness # HM54FR for your 2021 Chevrolet Silverado 2500HD. This will ensure you have the correct wiring and length needed to install in your truck bedside. The # HM11141144 is for a Chevrolet Colorado.
    view full answer...
  • Under Bed Rail Kit for Demco DM8550022 Auto Slide 5th Wheel Hitch on 2020 Chevy Silverado 2500
    We'd be glad to help you with that. Demco does make an under-bed rail kit that's compatible with their # DM8550022 Hijacker Autoslide hitch that will work with your 2021 Chevy Silverado 2500. You'll want to use the # DR37FR under bed rail kit. I've linked to the installation instructions for you. The Hijacker Autoslide is a great choice, and will be very convenient as you won't need to get out of the truck to manually actuate the slider. If you'd like an in-bed 7-way trailer connector...
    view full answer...
  • Do You Have the GM 7-Way Connector w/ the Camera Port?
    I am sorry Dwight but we do not. That picture you saw is one a customer sent in. It is an OEM part that GM used to put in their Silverado's and Sierra's. The Hopkins Endurance 5th Wheel/Gooseneck 90-Degree Wiring Harness w/ 7-Pole and 4-Pole Connector item # HM54FR you were looking at is only available as a 7-way and 4-way combo.
    view full answer...
  • Will The Bargman 5th Wheel/Gooseneck 90-Degree Wiring Harness # 50-97-410-010 Fit All Trucks?
    The Bargman 5th Wheel/Gooseneck 90-Degree Wiring Harness # 50-97-410-010 comes with aluminum mounting screws which are to be used on trucks with aluminum beds. This helps to prevent galvanic corrosion on the hardware. Beyond that it will fit on any truck which uses a USCAR style 7-way connector at the bumper. Several of the new Chevrolet/GMC trucks come with a cutout in the bed which will accept the push in style connector with the Hopkins Kit # HM54FR.
    view full answer...
  • Is Sliding 5th Wheel Hitch Required for Short Bed 2021 Chevy Silverado 2500
    Unless your 5th wheel has the front corners that are dished in or concave so the corners don't collide with the rear of the truck cab during turns, you'll need to use a sliding hitch in order to provide the proper clearance. The sliding OEM puck compatible Companion is part # BWRVK3775. If the 5th wheel has the dished in front corners described above, then the stationary version part # BWRVK3715 would work great for you. If you'd like an in-bed 7-way trailer connector, you can install...
    view full answer...
  • 5th Wheel Wiring Harness for 2020 Chevy Silverado 2500 With Factory Cut Out
    There is a 5th wheel wiring harness for your 2020 Chevy Silverado that was designed to fit perfectly in the factory cut out in your truck bed. The harness you need is the Hopkins Endurance 5th Wheel/Gooseneck 90-Degree Wiring Harness # HM54FR. I have added a photo showing this harness installed in a 2020 Silverado 2500 for you to see how it will look in your truck.
    view full answer...
    Image 1 for
  • Recommended Gooseneck Trailer Hitch For a 2024 GMC Sierra 2500 Short Bed Truck
    I recommend the B&W Turnoverball Underbed Gooseneck Trailer Hitch # BWGNRK1020 for your 2024 GMC Sierra 2500. This will fit regardless of cab style or bed length. You might consider the 4" Offset Ball # BWGNXA4085 to move the trailer slightly further away from your cab and allowing for more turning radius. If you should ever need to tow a 5th wheel you can add the B&W Companion Slider # BWRVK3400 to the slot for the Turnover ball. The Hopkins Endurance 5th Wheel/Gooseneck 90-Degree...
    view full answer...
  • How Much Weight Will The Demco Autoslide and Rails Add To a 2024 Chevy Silverado 2500?
    The Demco Autoslide 5th Wheel Trailer Hitch # DM8550034 itself is going to weigh 273lbs. The Rail Kit # DM39FR is going to weight 70lbs so you are looking at a total of 343lbs added to your 2024 Chevrolet Silverado 2500. I also recommend installing the Hopkins Endurance 5th Wheel/Gooseneck 90-Degree Wiring Harness # HM54FR which will add 3lbs. This will allow you to connect your trailer connector inside your bed rather than risking damage to the bumper connector stretching the wiring.
    view full answer...
  • Will Trailer Wiring Still Function After Install of Hopkins 5th Wheel/Gooseneck Wiring
    Yes, all of your current trailer wiring will work after you install the Hopkins Endurance part # HM54FR on your 2020 Chevy Silverado 2500.
    view full answer...
  • Recommended Gooseneck Trailer Hitch For 2023 GMC Sierra 2500 Without Factory Prep/Buck In Bed Hitch
    I recommend installing the B&W Turnoverball Underbed Gooseneck Trailer Hitch # BWGNRK1020 on your 2023 GMC Sierra 2500. This will fit either the 6-3/4' or 8' long bed without the factory prep/puck system in the bed. If you have a short bed you can use the 4" Offset Ball # BWGNXA4085 to gain some additional turning clearance with your trailers. If you ever need to tow a 5th wheel you can use either the Fixed # BWRVK3500 or Slider # BWRVK3400 Companion 5th wheel hitch. These will drop into...
    view full answer...


< Previous
123. . .4



Do you have a question about this Custom Fit Vehicle Wiring?


Info for this part was:

Employee Jameson C
Expert Research:
Jameson C
Employee Jacob T
Video Edited:
Jacob T
Employee Chris R
Video Edited:
Chris R
Employee Dustin K
Video by:
Dustin K
Employee Jonathan Y
Video by:
Jonathan Y
Employee Alexander C
Written by:
Alexander C
Employee Conner L
Test Fit:
Conner L
Employee David F
Test Fit:
David F
Employee Bradley B
Test Fit:
Bradley B

At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.