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  1. Custom Fit Vehicle Wiring
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  3. Custom Fit
  4. Fifth Wheel and Gooseneck Wiring
  5. 7 Round - Blade
  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 # 40167
Our Price: $75.09
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Custom Fit Vehicle Wiring

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Hopkins Fifth Wheel and Gooseneck Wiring - 40167
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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 40167 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 (91)
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Hopkins Custom Fit Vehicle Wiring - 40167

  • Custom Fit
  • Fifth Wheel and Gooseneck Wiring
  • 7 Round - Blade
  • 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


  • Harness length: 10'
  • Wire gauges:
    • Purple/green/yellow/brown: 16
    • Blue/red/white: 12
  • 3-Year limited warranty

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.

40167 Hopkins Endurance 5th Wheel/Gooseneck 90-Degree Wiring Harness with 7-Way Blade Plug

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 - 40167

Average Customer Rating:  4.9 out of 5 stars   (91 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.


Great experience with E trailer. Great costumer service, the right parts got shipped the first time. Easy package tracking on your phone too. Definitely will shop again will E trailer.

The product is still working out great.
Mark - 11/13/2022

2002 Ford F-250 Super Duty

After doing some research and trying to figure out what style and brand of ball mount to get…..I settled on this B&W product. Its nice to have the ability to adjust your ball mount for different trailers just in case you need to. Being a machinist, I found that this was very well made……no burrs anywhere, clean welds, very nice powder coat finish and packed in heavy duty cardboard to prevent hopefully no issues with shipping.

2004 Ford F-250 and F-350 Super Duty

After reading the reviews I started not to order this . My overall experience though was very good though. The trailer wiring harness I ordered was $140 cheaper than the dealership it was shipped promptly and arrived promptly thank you etrailer. I knew that a company dealing with thousands of products that mistakes are going to be made so I took a chance and you should too.

Couldnt be happier with my purchase and product is great. Thanks.
Alton B - 07/30/2018


I ordered this plug to replace a splice job done by a rv company. The previous plug was installed in the pillar next to the tailgate so clearance was a big issue. This plug with the two smaller gray plugs went in with a breeze. And now if I have any issues I can unplug and replace if need be. No more fighting a wire splice.

Good morning, the kit that I purchased worked like factory and the best of all it was plug and play. Thanks for helping with the purchase you guys are awesome:
Craig T - 02/20/2018


Done great, used with all my trailers, car trailers, gooseneck deckover, etc, keeps me lit up and stopping good and on the road definitely recommend if you have no plug or wiring issues


I get exactly what I need it , fast , great customer service!


15 minutes after wiring harness was delivered, it was installed. My husband drilled the 2 1/8” hole & I snapped the harness together. Done


My son has used your company before. He turned me on to it I am happy with the web site and pictures display the products. I will use your company again. Thanks!

2002 Ford F-250 Super Duty

Used on a 2002 F250, connected and worked great.

2016 Ford F-250 Super Duty

Used as replacement for factory trailer tow wire harness 2C3Z-13A576-DA that i lost shim for on one side and clip broke on the other.
Works great. Didnt want to have to splice oem frame wiring.
Using on 2002 F250 CCLB with factory tow package on a 2016 bumper.


Perfect fit


On time arrival and very professional s et

2002 Ford F-250 and F-350 Super Duty

Good product. Shipping was aceptable. I would like to have the pack of the 7 pin and wiring harness sealed from the elements. The location behind the rear wheel will definitely kick up a lot of mud and water on back of this connector. I taped it with about a roll of black tape to help keep the elements out. The end with the factory plugs worked great. Plugged in to my factory wiring harness. I also replaced my trailer wiring harness with the OEM harness.Both of these worked together eliminating having to splice into my factory trailer wiring harness.

Good as new no problems
Mark - 02/12/2020

2002 Ford F-350 Super Duty

I was looking for the wiring harness to replace the one on my 2002 F350, even the dealers couldn't find what I needed.
I went surfing the Internet and found exactly what I was looking for. I want to send kudos to etrailer for their quick service and keeping me informed about my order.
I received the plug-in harness yesterday and installed it today.
If a 70 year old woman can do it, anybody can.
Thank you etrailer!!!

After a year, still no problems.
Lorine L - 06/08/2018

2004 Ford F-250 and F-350 Super Duty

Just installed this as a bumper hitch version, did a service loop with the unused wiring and tie-wrapped everything up tight. Yes, grabbed a four pole adapter for it. I haven't towed with it yet but the continuity check is good, the wiring and connectors are well made and protected, and if needed I'd buy this product again.

No issues thus far!
Brian - 05/11/2019


Quality piece, a must have for towing a gooseneck trailer.

2003 Ford F-250 and F-350 Super Duty

Fits perfectly. Makes for a factory quality installation.

2003 Ford F-250 and F-350 Super Duty

I bought this wiring adaptor to provide for an in-bed connection for my slide-in truck camper.

I wanted my connection to be at the front of the bed so the length of this adaptor was a concern. But I had PLENTY of length and reaching from the rear of the truck to the front of the bed wasn't an issue at all. In fact, I had about 1 extra foot to spare.

Installation was as easy as I had hoped. It plugged right into existing harness and I was up and running in about 2 hours - which includes time to drill the hole in the bed of my truck, time to adequately drill a hole for the grounding wire, time to zip tie the wire to the frame. My only complaint (and its a small one) is that the kit could've come with more zip ties. I needed to dip into my own stock of them to properly secure the cord to the frame of the truck.

I hauled my camper just this past weekend and everything worked flawlessly.

I gladly recommend this product. Fast shipping, great customer support, no problems at all. Thanks guys.

2003 Ford F-350 Super Duty

Replaced the factory 5th wheel harness with the 40167 harness on my 2003 f350 Super Duty 6.0L long bed. Snap fit! I also added a bumper mount Pollack 7-Pole and 4-Pole Trailer connector HM40975-11998 Vehicle end splicing in my old 7-Pole factory plug (pulled the red insulator out of the factory plug end) to connect the the HM40975-11998 plug. I can now connect in the bed or to a pull behind with a 7 or 4 way. Slide in camper, 5vr, or trailer is now no problem. Thanks etrailer!

2002 Ford F-250 and F-350 Super Duty

Excellent product. Easily installed and worked exactly as advertised. Got my fifth wheel wiring inside my pickup box like it should be and lit up and my four wheeler trailer lights up like its supposed to. Thanks for an excellent product.

2002 Ford F-250 and F-350 Super Duty

Tried to get this part at local trailer shop. Was told that the only option was a 5th wheel split, that occurs at the back of the bumper plug. I wanted a split at the factory plug, reducing the risk of losing both plugs due to corrosion at bumper plug. E trailer had what I wanted, it was less than local shop and I had it in about a week. E- trailer is now on my go to list. Thank You.

2004 Ford F-250 and F-350 Super Duty

I am very pleased with my purchase. From the sales person (Donna) to the follow up after being shipped (Carol C) to the tech support I am very impressed with the whole experience. I received in an excellent time-frame , 24 hours later installed, hooked up and rolling down the road. If I need any product in the future I know where my go to source will be.
Lowell K.

After a year of use, I am as pleased as I was when I originally installed it. Their follow-up was impressive, making sure I was still a satisfied customer. Great customer service! 5 [stars]
Lowell K - 04/21/2020


Great product. Installation was easy. Works great. Use it to pull my 28 foot gooseneck trailer. My old trailer plug wouldn't let me use my trailer brakes and this one does. Awesome product would recommend it to anyone.

2004 Ford F-250 and F-350 Super Duty

great product, for goose neck and fifth wheel trailers,plugs in easily to existing wiring, stops the plug from pulling out from the rear.


The wiring harness I got you s for my 5th wheel plug. It got rid of all the splices that was all corroded and didn’t work. The new one has taken care of that problem.

Show More Reviews

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

  • How to Disconnect Locking Tabs on OEM Wiring Harness on 2004 Ford F-350 Diesel Crew Cab
    If the OEM wiring harness on your 2004 Ford F-350 Diesel Crew Cab uses square connectors like those on Hopkins harness # 40167 you will need to press in the release tabs in order to disconnect the existing harness. The tab is inside the small channel on the fastener. If you refer to the linked video at the 1:35 mark you will be able to see the tab engage as our technician makes the connection. If the plastic fasteners are factory original, then they may well be less flexible than when...
    view full answer...
  • Replacement 7-way Trailer Connector and Wiring Harness for 2002 Ford F350 Super Duty
    So, you're wanting to replace that Ford harness that has the rectangular plug on one end and the round US car connector that plugs into the 7-way on the other, is that correct? Unfortunately, we don't offer that part but I do have a solution that would work for you. You could use the Hopkins # 40167, and install it as shown in the video I've linked for you. There will be some extra wire you don't need, but you can simply bundle it up out of the way. The harness is pretty close to the price...
    view full answer...
  • Dim Brake Lights Turn Signals After 7-Way Install
    Did you try this test with the engine of the 2003 Ford F250 running? The additional voltage a vehicle has when running due to the alternator can help lights illuminate brighter. The other issue is that maybe your trailer is having a ground problem. Make sure that the vehicle side and trailer side connectors are clean and free of corrosion inside and out. The main connector grounds should be attached to clean and corrosion free bare metal surfaces. The light grounds should also be attached...
    view full answer...
  • Availability of Gooseneck/Fifth Wheel Wiring T-Harness for 2002 Ford F350
    You have the 7-way at the back bumper, as well as one installed in the bed, but you don't have the wiring connecting the two, is that correct? We don't offer the wiring harness only, you'll need to use the # 40167 you referred to. You can simply use the wiring harness, one end will T into the vehicle wiring behind the connector on the rear bumper as shown in the video I've linked you to, and the other would plug into the existing connector in the bed. You can either replace the existing...
    view full answer...
  • Trailer Lights Not Working After Installing Hopkins In-Bed Wiring Harness in 2002 Ford Super Duty
    The fuse blowing is an indication of a short circuit. Check all of the connections and wiring (as much as you can) and look for any dirt, corrosion, bent pins, or exposed copper strands touching bare metal. Repair as needed, if possible. It sounds like your 2002 Ford Super Duty came with a factory installed 4-Way that was later converted to a 7-Way. If not all of the wires for the 7-Way at the bumper are ran you will need to complete that but the lighting functions should still work. If...
    view full answer...
  • Fifth Wheel/Gooseneck Wiring Recommendation for a 2003 Ford F-250 Flatbed
    This Fifth Wheel / Gooseneck Trailer Hitch Wiring Harness # 40167 would plug into the factory harness of your 2003 Ford F-250. You would not have to splice into the wiring of your factory harness with this product. There is no reason you could not use the wires from this harness to power some clearance lights on your flat bed. I would recommend using LED lights since the have the lowest amperage draw.
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  • No Running light or 12 Volt Power on 7-Way Connectors for 2004 and 2006 Ford F-250
    There could be a relay or relays that are bad or missing on your 2004 and 2006 Ford F-250 trucks. On the 2004 make sure the fuse in location 38 is good, it is for trailer tow parking lamps. Location 115 is the fuse for the 12 volt circuit and location 305 is the 12 volt circuit relay. On the 2006 location 38 is trailer tow parking lamps. Location 107 is for the 12 volt circuit, and location 301 is the 12 volt circuit relay. If you are testing for power at the connector under and a little...
    view full answer...
  • Does Fifth Wheel/Gooseneck Wiring Harness 40167 Allow 7-Way At Rear to Be Used at the Same Time
    I spoke with my contact at Hopkins about the Fifth Wheel / Gooseneck Trailer Hitch Wiring Harness, # 40167. He stated that with this harness installed, both it and the 7-Way at the rear of the vehicle will be functional.
    view full answer...
  • How to Get Replacement 7-Way Harness for 2003 Ford F-250
    The best solution we have is the part # 40167 which comes with the harness you are looking for plus a 7-way. Since we don't have the harness by itself this is the best option we have. The good news is that you'd have a backup 7-way.
    view full answer...
  • Replacement Trailer Wiring Harness for 2002 F350 Superduty with Square OEM Plug
    We do have one option that would work on the plug you're showing me with the Hopkins Endurance 5th Wheel/Gooseneck 90-Degree Wiring Harness with 7-Pole Plug # 40167. You'll plug into this plug using the tee end, and one end will remain open. It looks like maybe you had a factory towing plug installed at one point and it's since been removed, but this will work well to provide you with a new working 7 way plug for your 2002 F-350. I've linked an installation video of this harness for you...
    view full answer...
  • Replacement 7-Way for 2002 Ford F-250 With Square Plug
    We do have a part you can use if your 2002 Ford F-250 has a factory 7-way with a square plug. What you will need is the Hopkins Endurance 5th Wheel/Gooseneck 90-Degree Wiring Harness with 7-Pole Plug # 40167. You can use this for the 7-way connector and will tape off one side of the two square plugs. You can see this in action in the linked video review I added for you to check out.
    view full answer...
    Image 1 for
  • Fifth Wheel Wiring Harness for 2005 Ford F250
    Hopkins does offer an Endurance 5th Wheel Trailer Wiring Harness that is compatible with your 2005 F250, part # 41157. The Hopkins Endurance 5th Wheel Wiring Harness you mentioned, part # 40167 fits up to the 2004 F250 only, and would not work with your truck, according to Hopkins. To view an install video showing a fifth wheel wiring harness being installed on a 2006 F350, click the provided link. The video shows a different model harness being installed, but the procedure would be...
    view full answer...
  • In-Bed 5th Wheel/Gooseneck Trailer Wiring Harness for a 2006 Ford F-250 Super Duty
    There are several 5th wheel and gooseneck trailer wiring harnesses that you could install in your 2006 Ford F-250. I have included a link to them for you to view. For Hopkins you could use # 41157. The harness that you have referenced # 40167 is designed to fit 2002 to 2004 Ford F-250 and F-350 trucks.
    view full answer...
  • Replacement 7-Way Trailer Connector for a 2002 Ford F-250 Super Duty
    I can only confirm 7-Way trailer connector # 118243 as a fit for up to 2001 Ford Super Duty trucks. For a 2002 what you can do is use harness # 40167 which is designed as in-bed wiring for a 5th wheel or gooseneck trailer but would work just as well to add a 7-Way at the back of your truck.
    view full answer...
  • Will the Ford Replacement OEM Tow Package Wiring Harness # 118243 Fit a 2002 Ford F350 SD
    I spoke with my contact at Tow Ready and he said that the Ford Replacement OEM Tow Package Wiring Harness, # 118243, is for use on the 1999 to 2001 model super duty trucks. This harness may plug into the factory connector, but the pin layout changed between the 2001 and 2002 model years. I read the review by JB350 that you referenced and the harness may very well plug in, but due to the pin configuration, there could be issues with the functions. We have not performed testing nor has...
    view full answer...
  • Hopkins Endurance 5th Wheel Wiring Harness Recommendation for a 2009 Chevrolet Silverado 2500 HD
    We do have a fifth wheel/gooseneck wiring harness for your 2009 Chevrolet Silverado 2500 HD, but the Hopkins Endurance wiring harness, # 40167, is designed for certain Ford Super Duty trucks only. Instead, you will want the Hopkins Endurance wiring harness, # 41157. This wiring harness will tee in to the factory connector just behind the 7-way connector at the back of your truck. I have attached fifth wheel/gooseneck wiring harness installation video for you to check out. You may notice...
    view full answer...
  • 7-Way Recommendation for Bumper and Bed of Ford F-350
    If you have the square Ford connector for the trailer wiring on your 2004 Ford F-350 you would want the part # 118243 for the 7-way at the bumper of your truck and then part # 40167 for a 7-way you could mount into the bed of your truck.
    view full answer...
  • Replacement 7-Way Trailer Connector for a 2003 Ford F-250 Super Duty
    Ford Replacement OEM Tow Package Wiring Harness # 118243 is not confirmed to fit the 2003 Ford F-250 Super Duty. But what you could do is use # 40167 which is a fit. It is basically an in-bed 5th wheel/gooseneck 7-Way that Tees in with the factory trailer wiring. I have linked a video showing how it tees in.
    view full answer...
  • Recommended Replacement 7-Way Trailer Wiring Harness For 2003 Ford F-350
    The 7-way connector I recommend for your 2003 F-350 is part # 40167. Since there are no standard connectors available you can use this harness and just secure the excess wire under the truck out of the way. Another option is to use part # 20024. This is a hardwire installation so you would need to cut the square connector off of your truck wiring along the frame rail and use this harness. For both of these you will need to install the harness using the included brackets as they do not...
    view full answer...
  • Fifth Wheel Trailer Wiring Harness Recommendation for 2002 Ford F-250
    For your 2002 Ford F-250 we have the Hopkins 7-Way Fifth Wheel Harness part # 40167 which is very similar to the # 118243 except designed to fit your specific vehicle. As long as you have the factory 7-way harness at the rear of your truck this is designed to fit and work well. I attached an install video for this for you to check out too.
    view full answer...
  • Replacement Trailer Harness and 7-Way Connector For a 2003 Ford F-350 Super Duty
    It sounds like you are needing the Hopkins Endurance 5th Wheel/Gooseneck 90-Degree Wiring Harness with 7-Pole Plug # 40167 for your 2003 Ford F-350. This is an aftermarket replacement for the factory connector and harness on your F-350. Be sure to use Dielectric Grease # 11755 on the connectors to reduce shorts and damage from corrosion on the connections.
    view full answer...
  • Recommendation for a Gooseneck Hitch on 2002 Ford F350 4x4 Long Bed
    According to B&W, on gas trucks the exhaust will not cause any clearance issues. On models with Diesel engines, in some cases the muffler might need to be moved slightly to clear the hitch. There is an bracket included with the hardware kit that is used to relocate the muffler if needed. The installation instructions make no mention of the need to relocate a brake line, they just mention that they want to be aware of where they are to make sure you don't damage them when positioning the...
    view full answer...
  • 5th Wheel/Gooseneck Trailer In-Bed Wiring Harness for a 2002 Ford F-250
    Wiring harness # HM40157 is listed as a fit for a 1999 to 2001 Ford F-250/F-350, but not a 2002. For a 2002 you can use harness # 40167. We have a few other options and I have included a link to them for you.
    view full answer...
  • Recommended 5th Wheel Truck Bed Wiring Harness for 2004 Ford F-250 Crew Cab
    The correct Hopkins wiring harness for your 2004 Ford F-250 Crew Cab is the # 40167. This will have the correct connectors to adapt your factory 7-way on your F-250 to provide you with a 7-way in the bed of your truck too. The # HM40147 you were looking at is designed for the F-150 models. I have linked an installation video of this connector being installed for your convenience.
    view full answer...

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