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7- and 4-Pole Trailer Connector Socket w/ Mounting Bracket - Vehicle End
Hopkins

7- and 4-Pole Trailer Connector Socket w/ Mounting Bracket - Vehicle End

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Custom Fit Vehicle Wiring

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This 7- and 4-pole trailer connector eliminates the need for an adapter and allows you to tow a trailer with either a 7- or 4-pole plug. Socket connects to your vehicle's OEM wiring system and mounts with included bracket. 1-800-940-8924 to order Hopkins custom fit vehicle wiring part number HM40975 or order online at etrailer.com. Free expert support on all Hopkins products. Great prices and Fastest Shipping for 7- and 4-Pole Trailer Connector Socket w/ Mounting Bracket - Vehicle End. Custom Fit Vehicle Wiring reviews from real customers.
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  • Reviews (2468)
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Hopkins Custom Fit Vehicle Wiring

  • 7 Round - Blade
  • 4 Flat
  • Custom Fit
  • Trailer Hitch Wiring
  • No Converter
  • Hopkins

This 7- and 4-pole trailer connector eliminates the need for an adapter and allows you to tow a trailer with either a 7- or 4-pole plug. Socket connects to your vehicle's OEM wiring system and mounts with included bracket.


Features:

  • 7- and 4-Pole trailer connector with mounting bracket
  • Has high-impact, ABS plastic construction
    • Stainless steel spring for easy cover operation
    • Rubber gasket provides weather-resistant design
  • Includes mounting bracket for easy, snap-in socket installation
    • Black, epoxy-coated steel construction
    • Mounts to bumper with included screws


Specs:

  • Application:
    • Replaces factory 7-way connector on Chevrolet, Ford, GMC and Nissan trucks and SUVs
    • Can be used to add a connector to 2003 and newer GM pickups and SUVs
  • Bracket dimensions: 4-3/4" long x 3-1/16" tall x 1-3/4" deep
  • Distance between mounting holes (center to center): 2-3/8"
  • 1-Year limited warranty


Dimensions of bracket

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.


Similar to 11775, PK11893



40975 Hopkins 7- and 4-Way Trailer Connector Socket with Mounting Bracket - Vehicle End

Item # HM40975

Installation Details HM40975 Installation instructions

This Product Fits The Following Vehicles



California residents: click here


Customer Satisfaction Score:


Customer Reviews

7- and 4-Pole Trailer Connector Socket w/ Mounting Bracket - Vehicle End - HM40975

Average Customer Rating:  4.8 out of 5 stars   (2468 Customer Reviews)

This 7- and 4-pole trailer connector eliminates the need for an adapter and allows you to tow a trailer with either a 7- or 4-pole plug. Socket connects to your vehicle's OEM wiring system and mounts with included bracket.

by:
2013 GMC Sierra

IS NOT A DIRECT REPLACEMENT FOR FACTORY CONNECTOR. So my review is two fold, as the connector seems to be solid and decently built, however I bought it as the site and Q/A said it was a direct factory replacement. Well it is not, it connector to the factory wiring however does not even come close to fitting in the factory spot, hence it is NOT a direct factory replacement.

Had two options, the kit included some cheap junk sheet metal bracket and self tapping screws, so you COULD technically put the bracket on the bottom of the bumper, which would make it like any other universal connector, and be left with either an unplugged useless factory connector or an ugly hole in your bumper where the factory connector is supposed to go.



by:

The box arrived opened and damaged. My wiring harness was missing. When I called to tell them my wiring harness was missing they told me that it was shipping separately but could not tell me when it would arrive. I later got an email telling me all of my items were delivered and asked me to leave a review. I still don't have my wiring harness and will not have the hitch installed by this weekend like needed because I don't know if I am ever getting my wiring harness.not to mention the box had no padding around the hitch so it's all scratched up.

Katrina D. profile picture
Etrailer Expert

Katrina D.

8/3/2023

I am sorry to hear that your order arrived in this condition. I see that our customer service department is currently working on a solution for you.



by:

This connector and bracket is a great product giving both 7 pin and 4 pin connections. I was able to reverse the bracket (making new holes) to allow it to fit behind the bumper cover piece that hides the hitch when not in use. The only drawback is that a wiring harness that fits the round 7 pin to the Buick Enclave rectangle plug is not available as a separate purchase. Had to buy an additional 7 pin outlet that came with the correct plug assembly and use that for my combo plug.



by:
2016 Ford F-250 Super Duty

It is the exact part that I needed, fitted perfectly and took only a few minutes to install. I am very pleased with the product and the service from etrailer.com!

Michael profile picture

Michael

8/10/2024

This fixed the wiring problem I was having, and I have had no problems since. Very pleased still.



by:

Connector works well. I put the electrival stuff that keeps the water out. The bracket is very rusted



by:
2016 Ford Explorer

If you are using the draw tie trailer hitch receiver, I recommend mounting the bracket before installation as it would be difficult to do later. Excellent quality easy to install.



by:

Worked exactly how described, great replacement for my risty only bracket and 7 pin connector. Fits my 2006 Chevy Silverado 2500HD perfect, plug and play. Bought specifically because the bracket is included. And with both 4 and 7 pin connectors, I don't have to use an adapter anymore!



by:
2014 Chevrolet Silverado

Here's some snaps of my Hopkins #40975 installation. I can confirm that it's an identical replacement for the 2014 Silverado 1500 trailer-light blank insert, no bracket required. It took me 30 seconds to plug the Silverado's OEM 7-pin round connector (located inside the blank insert) into the #40975 Wiring Kit and snap it into the cutout. Then I tested the flat 4-pin outlet of the #40975 with a 5 dollar 4-pin LED tester from West Marine, and all light functions tested good. Shweet! To remove the OEM blank plug, it helps to reach behind it and pinch the two spring clips holding it in place... same with the #40975 if it needs to be removed for some reason. When I ordered the part from eTrailer, your site had a comment, "This will not fit your vehicle. See below for compatible parts," or words to that effect. Maybe take a look at that and remove the comment, as the #40975 is an exact fit for 2014 Silverado 1500, no bracket needed. Thanks, eTrailer team!

Ron P. profile picture

Ron P.

3/19/2015

Although I havent towed since installing the Hopkins Pollak wiring kit since I installed it a year ago, I have tested the 4-pin connector for proper function using a 4-pin LED tester from West Marine and it checks out okay. Recently I inspected the kit for water intrusion mentioned by one of the raters, and I found no evidence of moisture inside the dual-connector compartment. On installation, I did make liberal use of the dielectric grease that accompanies the kit. Good product, easy installation, and great price.



by:

I am not sure how this bracket passed quality control. It sure is a good thing I'm not planning on using it. Really disappointing to see how quality is overlooked during the packaging process. This should have never left in this condition.

Jenny N. profile picture
Etrailer Expert

Jenny N.

6/30/2023

Oh! It is definitely not how we want the bracket to arrive to you. I will have our Customer Service team reach out.



by:
2017 Nissan Pathfinder

It came with it's own bracket, which is a plus. It was compatible with etrailer.com's part number C56357, which is also a plus. The self tapping screws being the only hardware coming with the item was a disappointment. I just installed etrailer.com's part number 76301 hitch receiver which has a mounting plate for brackets like this. The self tapping screws, which might have been effective, wouldn't have looked "professional." After finding some hardware which worked, it went on smoothly and fits well with the rest of the assembly.

Matt W. profile picture

Matt W.

7/7/2019

This product has been working well for the past year. I feel this was a smart purchase.



by:
2006 Chevrolet Silverado

Part claims you can "multi-tow"however, once you put a seven way plug-in you cannot open the four-way door to put the four-way and vice versa. don't waste your time on this part if you plan to, in my case, plug-in your truck bed camper and tow a boat/ATV trailer. Yes, you can remove both doors, but that won't protect the plugs when vehicles not use especially in winter.



by:
2015 Audi Q7

Scratched my head for a while, trying to find a quality way to connect this vehicle end 4/7 wire socket to my trailer ready (almost) 2015 Audi Q7. Finally decided that it really didn’t need to be bolted, but could be hose clamped to the existing heavy duty Audi bracket.

Mounted it sideways with a 1” diameter and a 3” diameter hose clamp. Be sure to use a 3” clamp with lots of serrations that all it to tighten it down a lot.

You’ll need to drill out the small hole of the supplied bracket to allow a clamp to fit through it. The other hole is a slot, and works unaltered. Small clamp on bottom, large clamp on top.

You’ll also need to relieve a small spot on the trim piece to make room for the 4-wire door to o-en freely. This is marked as red on one of the pictures.

Looks good and should work good!


Rob profile picture

Rob

9/22/2019

Good installation approach for q7’s. Keeps water from collecting in wiring junctions.



by:

Easy installation, nice clean factory look. Plugs right into the factory harness of a 99-up Chevy/GMC truck.



by:

Excellent product but it did not come with mounting screws that worked on my car. I ended up using the old screws and thread clips to mount your new product



by:

Excellent product choices, reasonable pricing, and great communication.

I would buy again from eTrailer!



by:

This company is an absolute pleasure to work with. Item was delivered fast and exactly as described. This is the second item I’ve bout from etrailer the first being a 9000lb rated hitch. Will order again from these folks when if I need stuff for my truck.



by:

Great product at a great price. It was an exact fit and looks great. I like having the ability to plug in my 7-prong plug on my travel trailer or the 4-pin plug on my boat, without needing an adaptor. Got super fast shipping too. Buying from etrailer.com was a win- win-win.

Bob R. profile picture

Bob R.

5/31/2014

What year is your silverado

RachaelH profile picture
Etrailer Expert

Rachael H.

6/4/2014

Randy S. profile picture

Randy S.

6/6/2014

Its a 2014 Silverado 1500 Double Cab



by:

nice looking product, haven't plugged into it yet to know of the electrical part, caution about the install, make sure you have about 5" clear directly behind the install location of your bracket to allow room for the connector and to attach your vehicle plug, see photo, I had wanted to mount this on the bottom of my bumper, but not enough clearance

Victoria B. profile picture
Etrailer Expert

Victoria B.

9/23/2019

A no-drill mounting bracket like # C57202 is a great way to give clearance needed to mount the wiring connector higher up on the hitch.



by:

Perfect match for my 2004 Silverado's pre-wired harness and a breeze to install.



by:

Very easy to install. The connection with the trailer plug is a snap.



by:
2003 GMC Sierra

Top quality trailer connector that fir original wiring harness perfectly.
Installed in under 15 minutes.

John C. profile picture

John C.

7/26/2022

Works great and looks great. Get compliments on the hitch.



by:
2014 Jeep Grand Cherokee

This wiring connector was a perfect fit for my 2014 Jeep Grand Cherokee. Easy to install, hooked right up to the pigtail that was already on my Jeep. Simple install.

Mike T. profile picture

Mike T.

4/18/2018

Thanks. I couldnt be happier with my hitch and light hook-up a year later. I use them pretty often.



by:
2005 Chevrolet Silverado

A great upgrade to the stock plug. Adding a 4 pin allows me to not have to use a flimsy adapter.



by:

The trailer hitch plus 7-4 Pole trailer connector all fit perfect on my 2018 Grand Cherokee. Installed it myself with the help of a couple of jack stands to support the hitch while I bolted it in. Saved a bundle over having the dealership install the Jeep brand. The hitch is barely noticeable. The only issue with a jeep is they do not activate the connector plug so I had to have the dealer activate it after I installed it.



by:
2021 Chevrolet Silverado 1500

Easy installation and very helpful installation video.

James profile picture

James

3/8/2024

One year later and no issues


25
2468
Show More Reviews

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

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  • Parts Needed To Add a Factory Style 4/7-Way Connector On a 2022 Ford Bronco With LED Tail Lights
    As you already have the Curt Trailer Hitch Receiver # C76WR for your 2022 Ford Bronco Badlands you will only need the wiring. The Tekonsha OEM Replacement Vehicle Wiring Harness # TK55VR is compatible with your Bronco having LED taillights. This will include all the wiring for the trailer brake controller as we do not have a kit with all the wiring without the brake controller wiring. If you later need a Brake Controller # 90195 you will be able to add one at a later date. Rather than use...
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  • Is Hopkins or Pollak Better for Trailer Connectors?
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  • 2021 Ram ProMaster 1500 Trailer Wiring Recommendation for 4-Way and 7-Way Sockets
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  • How to Add a 7-Way Connector and Brake Controller to a 2015 Audi Q7
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