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

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! 567819

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

Rob - 09/22/2019

Plug and play, couldn't be easier! Decent price too. Only 4 stars due to the ridiculous self-taping screws they expect you to put through 3/16" steel (just guessing on the thickness - it's 1/8-3/16 best guess...). The install video on the site shows them using nuts/bolts/lockwashers to install it, which is what I did. This product should come with that arrangement instead of the self-taping screws, in my not-so-humble-home-installer-opinion... 554683

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. 538985

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

Matt W - 07/07/2019

by: Richard09/24/2018

Good quality no issues 568536

Was exactly what I looked at on-line. The description was spot on. Was shipped in a timely mannet and it installed in just a few minutes 225112

The product is working fine. I like having the product so I dont need adapters. Thanks

Marshall a - 09/11/2016

I just received my package from Etrailer.com and it was nice to open the box and have the right part/part I ordered arrive. Opened up the box staged my parts and started the install. It was very easy with the instructions that were sent and the video on their site that anyone can do this install with no issues. Hitch was on in no less than 15 mins from opening of the box to final torquing of the bolts. The customer service at this company is top notch. I have never had anyone from a company email me before after ordering from them like I did with this company and in business today you are seeing less and less of this type of customer care and service. AWESOME job Guys and Gals I will buy all my accessories from here. 90754

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Installed on 2017 Jeep Grand Cherokee Laredo and Draw-Tite hitch. Setup was super easy using factory connection. Now just have to have Jeep dealer activate the trailer towing feature to get it to work. Couple quotes for $140.00 to flash computer. Seriously I asked. Oh well. I'm knocking it down 1 star because if you look at the video that etrailer has for installing this product, they installed on a hitch that had the mounting bracket on it and didn't use the self taping bolts. It seemed at least to me, there were/would be nuts and bolts provided with the kit (along with the self taping bolts). At least for me that wasn't the case and I had to piece together the hardware. 505920

Good product. Fast service 570072

Fit my 2018 silverado perfect,well made. 567873

Good fit and worked just fine. A bonus is that it also has the 4-pin connector built-in so no adapter is required for that kind of trailer connector. 563271

Product was easy to install on a 2006 Ford F350, I replaced the original that had rusted a part. Just plug in and snaps right in. 565999

I ordered DrawTite hitch #76031 along with Tekonsha Wiring #118273 and HM40975, 7 and 4-Pole Trailer Connector Socket for my 2018 Nissan Pathfinder SL. I ordered on a Thursday afternoon and the merchandise arrived the following Monday evening (with free shipping and no tax). The hitch arrived in excellent condition with no scratches or scrapes and was packaged very well. The total for my order was a great price! This also included a tube of dielectric grease and a brush. To get a factory hitch would have required an expensive "Technology Package" at a cost of over $2000 or a dealer install which would have cost over $1000. I did the install of the hitch myself. It would have been far easier if I had a lift to raise the vehicle off the ground, and a helper to hold the hitch in place and get the 6 frame bolts started. I used an ice chest to prop up one side of the hitch while I got the bolts started on the other side. Watch the videos from etrailer before doing the install. I did have to trim about one-eighth of an inch off the corner of the gasoline vapor recovery box on the left underside of the vehicle to get the hitch into a position so that the holes in the hitch lined up with the weld nuts on the frame. I used a rotary file on the end of my drill to do this. The 2X2 receiver does barely touch the bottom of the rear trim on my Pathfinder but did not require cutting the trim to get it to fit. The Tekonsha #118273 Factory Wiring was not difficult to install. The etrailer video on how to install this item was not as good as it could have been. The installer says he is going to make the 2 vehicle connections inside the left-rear of the vehicle "by feel," which may be fine for someone who knows what he is doing, but was not helpful to me. I pulled back the trim on the inside left rear to make these 2 connections. You should definitely make ALL of your wiring connections BEFORE installing the hitch itself. If you don't, it will be very difficult to reach the connectors outside the right rear of the vehicle if the hitch is already in place. BE WARNED about this. The HM40975 connector was very easy to install and by having it you will not need to use an adapter to use a 4-way flat trailer connector. I used 2 stainless steel bolts to fasten the bracket into place instead of the included self-tapping bolts that were in the kit. This item is well worth the small cost. I am completely satisfied with my purchase from etrailer and will not hesitate to recommend them highly. Both George and Adam at Etrailer were very helpful. See the picture of the completed install on my 2018 Nissan Pathfinder SL. 566326

This is a plug-in replacement for my 2010 Ford F-150 with factory installed trailer package. I had this exact same connector but someone unclipped it and stole it. Ford Parts wanted over $100 for a replacemnt (they included the entire rear bumper harness that I did not need). I had the cutout on the hitch that exactly matched this bracket and the blue socket that you see in the optional pigtail available for this product (see attached photo). I snapped this dual connector into my existing cutout - fit perfectly. Did not need to use the included bracket. So if your factory connector is damaged or stolen, use this as a snap-in replacement. The only difference is it says "Pollack" instead of "Ford". I called Hopkins before I bought and they said they supplied a lot of the OE parts Ford uses. 55449

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Quality OEM [email protected] substantially lower cost then OEM. 83070

It appears there is an engineering design defect in this product - at least when installed on my 08 F250. Water from Michigan weather - i.e. rain, snow and car washes continues to find its way into the plug, corroding the contacts and causing a wiring fault. No Im NOT backing into water to unload a boat, Ive removed, cleaned and dried the inside at least three times, covered the contacts and connection points with dielectric grease and carefully sealed the unit w electric tape. Last week, I sprayed the outside of the plug w/ flexible rubber seal yes as seen on TV in my fourth attempt at stopping the water from getting into the plug. This past week, while on a 500 mile road trip we made it through torrential driving rain without experiencing any connection issues. Im keeping my fingers crossed and hoping I dont have to take the plug apart, now that its sealed in the rubber coating!

David S - 06/03/2014

We hope the rubber coating takes care of the problem. If not, we've got a couple of suggestions. You mentioned dielectric grease. If you weren't already, you can be pretty liberal with the application. You can fill the socket and push the connector in and wipe the excess that squirts out. If all the voids are full of grease, there's no place for the water to go. Second, on most of these types of connectors, there is a rubber gasket on the vehicle side that usually stays in, but will sometimes pull out when you remove the cap or the previous 7-way connector. If you still have the cap or old connectory, you may want to check for the gasket.

-- Patrick B - 6/9/2014

The 2018 GMC Sierra 1500 base model with no options has the wiring harness at the bumper. The bracket and bolts are not needed on the GMC 1500. 552385

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Also fit perfect like it says...thank u 571389

Trailer plug unit (Pollack 7 & 4 pole for my F-250 was broken by the car wash. Called the dealer and they wanted double what e-trailer sales it for plus I had to special order and that took too long to ship as I needed it immediately. I went online and found ETrailer.com and they had the exact replacement device that was identical to what the manufacturer had installed. I ordered it and asked to have it within a set timeframe and e-trailer did exactly what they said they would do! The lady I spoke with Cathy was on the stick with the entire order and follow-up. The Etrailer staff then followed up the very next day of delivery. I have just installed the plug this morning so it has to be tested but do not forsee any issues as it is the exact replacement which worked great before. I am very impressed with the service here and will most definitely buy from them again as well as refer my freinds and business associates. I manage a commercial fleet as well as work with many other contractors who have trucks and trailers and there is always the need for something in this category. Great job ETrailer, you have a new long term customer. 42962

This was what I needed to make my new truck able to pull my two trailers. You even had a video showing how to install it on your web site, this helps a lot. Thanks for the help. 211204

Thanks for the follow up Rachael, the part is working great, dont use it very often but still needed to have one. You guys are great! Will recommend your site to others needing parts. Glad that a Company can still value there customers now a-days, does not happen as often as it use to.

Dan R - 08/05/2016

This was a great addition to the hitch I bought for my 2011 Grand Cherokee. I was able to plug it right into the factory harness for a perfect fit. The only issue you may have is the trailer lights won't work until you get the computer flashed from the dealer to tell the Jeep it has a towing harness attached now. 54337

Thanks for the info. We have seen some dealers so it for less even for no charge. Just depends on the dealer.

-- Patrick B - 3/21/2013

Part was delivered on time and perfect fit. Etrailer was a $100 cheaper than dealer. 575773

The HM40975 was a perfect fit for my 2014 Jeep Grand Cherokee . I would definitely purchase if needed again. 571419

The product ended up being good for my needs and easy to install. But this light kit originally had an install video for a 2017 Titan when purchased but the video disappeared and became a 2010 Titan. Luckily it still worked for my needs. 568194

Perfect fit and easy to install! 575076

Perfect replacement for my 2007 Sierra Classics factory connector. 571162

very easy to install. it is a rather tight fit on a Chevy traverse. Allows a factory install of aftermarket hitch by using GM harness # 25910884 ($68.00) . Harness comes with snap in wire ties that go in holes on cross frame of rear bumper. Vehicle to connector harness is located to the rear of right rear tire between outer body panel and tail light . Use flash light and look up. Cord fits E trailer Vehicle end plug 40975. Need to drill two holes in cross frame for bracket. It all snaps together very well. Also need to add 3 relays in engine fuse box. GM13502753. This is gray relay 1/2 in square and has 2750 market on top. this eliminates splicing delicate factory wiried and hassel of hot wire from battery. Bumper skirt snaps back into place and hides hitch totally on 2013 Chevy Traverse. 87284

Has worked like OEM installed product only about $400 cheaper.EXCELLENT I will do it again on my next vehicle,

Chas - 07/03/2014

Awesome! Two minute installation! 575724

Good product. Sturdy, nice feature to have the 4 pin and 7 pin plugs, rather than using an adapter. Plugged right into my 2001 Tahoe wiring which was nice. Everything works as it should. My ONLY issue, is actually with etrailers installation video. We drilled the holes in the bumper, same as the video, and got everything installed. The vehicle wiring plugged into the connector at an upwards angle. This caused it to hit the hitch body before it was fully seated. We found we had to mount it to the hitch, because in the video, they have a "valley" hitch, that has more of a bend to it, than the factory round hitch. We ended up mounting it to the hitch itself. Works great. So for the product, 5 stars, for etrailer on this one issue, 4.5 stars. 206247

I just purchased a new 2017 Chevy Silverado 1500 4.3 L V6, 8ft bed, base model truck, with no options. The truck is rated to tow a 5900 lbs trailer with a CGVW limit of 11000 lbs. I will be towing a Lance 1985 travel trailer, that weighs in around 4500 lbs wet. With excellent reviews and outstanding installation videos from etrailer.com, I ordered the Curt C14006 class IV hitch; the Tekonsha proportional Prodigy P3 brake controller; the Tekonsha plug-in wiring adapter specified for my truck; Cipa custom slip-on towing mirrors; and the 7- and 4-Pole Trailer Connector Socket w/ Mounting Bracket - HM40975 specified for my truck. All new Chevy Silverado 1500's (even the base model with no options) comes from the factory pre-wired with a basic seven wire trailer towing harness already installed. Everything electric just plugged in without a single cut or splice of the wiring or any other wiring modifications. I just followed the instructions in the excellent installation videos on the etrailer.com website. The hitch installed quickly and lined up perfectly with factory bolt holes already on the truck frame, no drilling required. Finally I slipped on the Cipa custom towing mirrors and I was ready to tow after about two hours work. If I would have ordered my truck with a factory tow package, integrated brake controller, and extendable towing mirrors, the options would have run me slightly over $1450 on a new Chevy truck. Instead, I spent two hours of my own time doing the installations and paid about $550 for all the parts by ordering by from etrailer.com. Nice savings. You need to have a good set of socket and open end wrenches, including a torque wrench adjustable to a minimum of 110 ft/lbs for the hitch bolts. Spend some time and review all the installation videos for the parts that you need to order. The etrailer.com website also has downloadable installation instructions provided by the parts manufacturers. 477372

Plug worked great but mount didn't work for some reason said it fits a ford f250 2002 the connection matched but bracket was to short in height didn't come low enough to get plug below bumper holes lined up depth good but to high had to mount new bracket to old bracket 551190

Perfect!!! 235563

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Absolutely love the product!! Is holding up amazingly!!!!*

Zachary G - 03/12/2017

Excellent quality. Only took 5 minutes to install. Outstanding customer service!! Ordered online on Friday and received via USPS on Monday, with emails letting me know the order was received, the item was shipped, and one that stated that the company had received information that the item had been delivered. And each one was signed by an individual. If only all companies operated this way. 93531

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Works great! Nice to see that there are companies like yours that value customer service and take the time to follow up after a years time. Thank you.

Zip i - 02/20/2015

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! 120915

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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.

Ron P - 03/19/2015

Great product and pretty easy install. Nice that there was a video showing how to do it correctly. 729130

Fast delivery and exactly what I needed ! 726029

Great website & appreciate watching the how to install videos 725908

Just as advertised. Bolts cut right into the bumper, had it mounted in 7 minutes. Highly recommend. 724992

by: Brc11/08/2019

Easy to install, I ended up having to take my vehicle to the dealer and paying $[XXX.XX] to activate the towing feature on my Dodge but once that was done it works like it was factory installed. 724638

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by: Ed B.11/04/2019

My old bracket holding the trailer wiring connection had rusted out. Ordered a new bracket and wiring connector fit perfectly. Easy to install. I am very happy after one year. Delivered on time with no problem. 722636

by: Steve11/04/2019

Not sure why my original was intermittent and worked with some plugs and not others but this was a perfect fit and has worked every time so far. 722456

Wasn't easy finding a place to mount it on my vehicle, seems to be good quality 721746

by: Ivan D10/30/2019

Product was easy to install. Easy snap into place 721158

by: Wayne K10/28/2019

Works great 720675

I saw some people had it attached to the hitch. I preferred the way it looked attached to the bottom of the bumper. 718385

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fits and works perfectly 718075

Best direct replacement for the original equipment. 718053

by: Joe L10/16/2019

Exactly what I wanted. Looks and works great . Simply bolt it on and plug in the connector 717850

Very professional and knowledgeable about the product I ordered. Will definitely go through them again. Angela knew her stuff. 717557

Havent installed yet but looks like it will work 717549

Great product. Part was 132 dollars at a local auto parts store and 42 with shipping from here. 716855

Just what I’ve been looking for, still don’t understand why they didn’t come with both however, I’ll have it now. 714573