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  1. Custom Fit Vehicle Wiring
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  4. 7 Round - Blade
  5. Custom Fit
  6. 10 Feet Long
Hopkins Endurance 5th Wheel/Gooseneck 90-Degree Wiring Harness with 7-Pole Plug

Hopkins Endurance 5th Wheel/Gooseneck 90-Degree Wiring Harness with 7-Pole Plug

Item # 41157
Our Price: $68.94
Custom Fit Vehicle Wiring

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Hopkins Endurance 5th Wheel/Gooseneck 90-Degree Wiring Harness with 7-Pole Plug Custom Fit 41157
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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-angled connector fits into tight spaces. 1-800-940-8924 to order Hopkins custom fit vehicle wiring part number 41157 or order online at Free expert support on all Hopkins products. Great prices and Fastest Shipping for Hopkins Endurance 5th Wheel/Gooseneck 90-Degree Wiring Harness with 7-Pole Plug. Custom Fit Vehicle Wiring reviews from real customers.
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  • Reviews (708)
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Hopkins Custom Fit Vehicle Wiring - 41157

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

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-angled connector fits into tight spaces.


  • Provides 7-way, blade-style connector in your truck bed for hassle-free hookup of 5th-wheel and gooseneck trailers
    • Connector head is designed with 90-degree angle so it fits into tight spaces in truck-bed side rails
    • Lid with oversize hinge opens 180 degrees for easy connection
  • Retains the use of the 7-pole connector at the rear of your truck
  • Installs quickly and easily - no cutting or splicing required
    • Plug T-connector into factory wiring and your vehicle's factory-installed 7-way connector
    • Run 10' long wiring harness from rear bumper to truck bed
  • Offers enhanced weatherproofing with internal seals, corrosion-resistant terminals and rubber-coated copper wiring
  • Constructed of extremely durable ABS plastic
  • Includes self-tapping screws, dielectric grease packet and nylon ties for installation
  • Requires 2-1/8" hole in truck bed


  • Harness length: 10'
  • Wire gauges:
    • Purple/green/yellow/brown: 16
    • Blue/red/white: 12
  • Distance between mounting holes center to center:
    • 2-1/4" Horizontally
    • 1-1/2" Vertically
  • 3-Year limited warranty

Dimensions of mounting holes

This T-connector wiring harness uses your factory tow package to add a 7-way socket in your truck bed while also retaining the use of the 7-way at your vehicle's bumper. The harness plugs into the back of your 7-way at the bumper and also into your factory wiring. And it provides 10 feet of cord to run the second 7-way connector to your truck bed. Installing a second 7-way connector in your truck bed makes it easy to connect the 7-way plug from your fifth-wheel or gooseneck trailer.

41157 Hopkins Endurance 5th Wheel/Gooseneck 90-Degree Wiring Harness with 7-Way Blade Plug

Installation Details 41157 Installation instructions

This Product Fits The Following Vehicles

California residents: click here

Customer Satisfaction Score:

Customer Reviews

Hopkins Endurance 5th Wheel/Gooseneck 90-Degree Wiring Harness with 7-Pole Plug - 41157

Average Customer Rating:  4.8 out of 5 stars   (708 Customer 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-angled connector fits into tight spaces.


Installed on my truck bed for my Lance 650 coupled with Lance bed mount wiring harness purchased from another RV supply company to complete install and saved $600 from Lance dealer install. Also ran 2/8 gauge wires fused to truck battery hot and ground.


Easy to install. If there one thing to note, it would be to add a caution in the instructions about drilling thru the inner bed wall. It will be easy to drill thru the inner wall to hit the outer wall, leaving a nasty dimple on the side of your truck. A drill stop should be used. I like to use tape wrapped around the drill bit and then around the hole saw. About 10 to 15 raps works.


Excellent product, fit perfectly where I wanted to mount it. Does not stick out when hauling landscape materials and lumber with 5th wheel hitch removed.


This wiring harness is ideal for cutting in a trailer plug for your fifthwheel
I had it installed within an hour of delivery. Great job e-trailer!



The trailer wire bundle is a perfect fit and is like new after many connects this past year. I highly recommend.


Great product and instructions! Simple to install!

Wayne S.




Just purchased a new to me 2020 Ram 3500. Surprisingly, this truck had no towing components other than just a receiver hitch. I ordered the B&W Turnoverball Underbed Gooseneck Trailer hitch and Hopkins wiring harness. Super easy to install yourself. I want to give Amy at etrailer a huge shout out for her excellent communication starting with the ordering process to final delivery. etrailer will definitely be be my go to source.

Ford F-350 Super Duty

Received the harness just as described and on the same day as expected. Great product from etrailer! With minimal modifications, I will use the harness to connect my Lance truck camper to my F350 truck.

2023 Ford F-250 Super Duty

I've used one of these in the past with a Chevy and had no problems but my most recent one was either faulty or did not work with a Ford. The truck wouldn't recognize it at all so I had to order a factory replacement.

2019 Chevrolet Silverado

The wiring harness was an easy install on my 2019 Chevy Silverado 2500HD LTZ Duramax diesel. Shipping was quick to the Pacific Northwest. The cord length is perfect for a custom placement. Looks like a factory installation with 100% positive tests when hooked up to the fifth wheel trailer.

2018 Keystone Cougar Half-Ton Fifth Wheel

This was something I wanted to do for awhile and Now it's in and I couldn't be happier. The ease of pulling in the truck was awesome.

2022 Ford F-250 Super Duty

Quality product, and quick shipping, but then I did ask and pay for that.



The plug is convenient and also keeps my pigtail contained within my truck bed.


Easy installation

2019 Ford F-350 Super Duty

fit my 2019 F350 perfectly. install was simple with clear instructions.



Had this on my truck for a year now, still working perfectly. This is clearly a quality product.


Sales team and service was excellent. Product arrived on time and in excellent condition. Would recommend this company to anyone looking for anything to do with trailers.


Installed this when I bought a truck camper. It was plug and play at the factory Ford end. I needed a 7-way at the front, driver's side of the bed for camper hookup. A little drilling and some hardware install and it works great at the front of the bed. I cracked the cover, no fault of Hopkins brand.

Capt R.


After a year, this product has been great. Worked as described and was plug and play at the rear factory Ford end.

2014 Dodge Ram Pickup

I have a 14 Ram 6.7 without the convenient in bed plug-in for connecting my 5th feel connection. Always had to drape it over the tailgate.

A medium sized hole saw, some zip ties, and this harness did the trick


Shorted every thing out now have no power to oem plug not happy!!!

Etrailer Expert

Katrina D.


That is not good at all! There are couple of things it could be. Do you have the camper connected and are trying to haul a trailer as well? It could also be that the wiring is bent or corroded somewhere on the new harness or the vehicles wiring.


Easy installation, perfect fit. Completed install in 15 min!

2023 Ford F-350 Super Duty

Everything works as stated. I'm very happy with the harness


Simple install. Mounting socket seems built well and heavy duty.

2024 Ford F-350 Super Duty

Easy to install but doesn't work for my truck, 2024 F350, when it says it does. The lights would work but not the brakes. Just buy the OEM plug and save yourself some time and money in the long run. I would not recommend this.

2019 Chevrolet Silverado 2500

My package was damaged in transit and the hitch ball was missing. Customer service was awesome and very quick to make it right.


The install was very straightforward and the quality seems top notch. I'd recommend these products to anyone. I'll be purchasing a sidewinder pin box to complete this once our new fifth wheel arrives.

2004 Chevrolet Silverado 2500

Great product. Installation time was ten to fifteen minutes even with cutting the hole in the box. This is an excellent kit overall. The zip ties that came with it were a little small, so I used my own. It would be nice if the kit came with the ground screw. I would recommend this product to anyone. I installed it on my 2004 Chevy 2500 HD.



The product is still working great a year later


2013 Ford F250.
Easy install.
on side of bed.
Won't have to worry about tight turns and pulling on the plug or pulling it out. It was previously mounted on the under the bumper.
Everything went together smoothly.
All parts and accessories were in the box, didn't need anything extra.
Had the entire install done in about 20 minutes.

Thanks for a super product.



I have been using the connection for a year now and it has held about to a vigorous use. I remain satisfied with the product.

Show More Reviews

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