7- and 4-Pole Trailer Connector Socket w/ Mounting Bracket - Vehicle End
Product Specs:
Custom Fit Vehicle Wiring
Trailer Hitch Wiring
No Converter
Custom Fit
7 Round - Blade
4 Flat
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.
Video of 7- and 4-Pole Trailer Connector Socket w/ Mounting Bracket - Vehicle End
Customer Satisfaction Score:
97% were satisfied with this product
3% of customers were not satisfied
- Wrong item was ordered
- Product did not meet expectations
- etrailer mistake
Customer Reviews
7- and 4-Pole Trailer Connector Socket w/ Mounting Bracket - Vehicle End - HM40975
Average Customer Rating: 4.8 out of 5 stars (2348 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: Michael07/12/2023
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.
by: 2006 Silverado 2500HD08/03/2023
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: Jason06/24/2023
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.
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: Jim04/17/2024
It was easy to install and took care of the issue I had of one of the trailer light segments not working.
by: James 02/28/2023
2021 Chevrolet Silverado 1500
Easy installation and very helpful installation video.
James
3/8/2024
One year later and no issues
by: Ali 12/30/2022
This thing couldn't be better. Easy mounting. Plug and play. I can now connect any trailer I want. Love it, love it, love it!
Ali
1/7/2024
This was a major upgrade for me at the time. A year later, Ive hauled massive loads across the country, and this connector harness works perfectly every time
by: Brad 04/11/2024
I bought this because I needed the bracket and it was the quickest way to get it they do not stock the bracket alone. We where installing tommy lifts and needed t move the original connector which was installed on the bumper.
by: Mike07/15/2023
7 and 4-Pole Trailer Connector Socket does not fit my towing vehicle.
Today I just received my etrailer order #114979486, that consisted of: Curt T-Connector Vehicle Wiring Harness with 7-Way Trailer Connector (ITEM # C56431) and 7- and 4-Pole Trailer Connector Socket w/ Mounting Bracket - Vehicle End (ITEM # HM40975) for my 2020 Ford Ranger. I easily installed the harness, but the Trailer Connector Socket does not seem to fit on the rear bumper, next to the license plate.
Last week, I chatted with etrailer customer support rep and I was assured that the connector Socket (ITEM # HM40975) would fit on my 2020 Ford Ranger.
This etrailer customer support representative referenced a previous Q&A Topic titled, "Can the HM40975 be used on a 2021 Ford Ranger". I was also assured that 2020 and 2021 Rangers have identically constructed rear bumpers.
Today, I spoke with a different etrailer customer support representative. This rep told me 7-Way Trailer Connector (ITEM # C56431) was not compatible with the 2020 Ford Ranger recommend reaching out to the manufacturer directly for more information.
I'm very frustrated!!!! Can I please get a solution to this issue ASAP.
Jenny N.
7/19/2023
I am sorry that this has been a frustrating experience, however I do have an answer for you. The Hopkins connector part # HM40975 is technically not a fit on its own for a 2020 Ford Ranger. The short reason why is that the Ford Rangers do not have the round US Carr type of connector to plug into. Now by adding the Curt harness part # C56431 like you did, does make that round connector that you can plug into the back of the Hopkins connector that will give you the 7 and 4 way you want. Since it is using two different manufacturer products together, I do encourage you to test the 4 and 7 way to make sure all the signals are working correctly. In theory they work together, however they are not tested. The issue is going to be that the bracket that comes with the Hopkins connector is not going to match with anything on the Ford Ranger to connect to. It would just be bolted to the bumper or you could also consider using part # C57202 to install it on your hitch.
by: Ron P03/17/2014
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.
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: Matt W07/07/2018
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.
7/7/2019
This product has been working well for the past year. I feel this was a smart purchase.
by: Mark 03/20/2024
2018 Chevrolet Silverado 1500
Item received as described. It was simply plug and play. Out with the old, and the new was an exact replacement. Very satisfied.
by: Dennis 02/08/2024
2010 Ford Van
This dual connector adds a professional looking touch to our tow wiring installation
by: Rob09/22/2018
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
9/22/2019
Good installation approach for q7’s. Keeps water from collecting in wiring junctions.
by: Bert 03/28/2024
The self tapping screws that come with the mount are junk,
The product is Good.
by: Lonnie04/08/2024
Great product, it was just what I was needing to complete my project.
by: Steven 04/21/2024
2022 Nissan Titan
Came in on time. The parts were in good shape and fit perfectly.
by: Doug 11/02/2022
Fit and works fine. My old one was just the 4 plug so now I don’t have to use the adapter for 7 prong anymore.
Doug
11/3/2023
Works fine- no issues.
by: Guy05/22/2022
2003 GMC Sierra
Top quality trailer connector that fir original wiring harness perfectly.
Installed in under 15 minutes.
John C.
7/26/2022
Works great and looks great. Get compliments on the hitch.
by: RT12/13/2023
A very good option to cut down on rattle. This is a durable product that is fairly simple to install. My only complaint is the magnet to keep cover closed when not towing should be stronger. I am happy with the purchase and it looks like it will be useable for years.
by: James 08/07/2023
This was a drop-in. Literally unplug the wiring harness off the blank, pop out the blank, pop in the new connector assembly then plug the wiring harness back into the connector. Honestly took less than 4-minutes. Awesome product. My local hitch install company wanted $150 just for the install of the connector.
by: Warren 04/25/2023
2005 GMC Sierra
Fast shipping. Nice quality product
Warren
4/26/2024
Products still working great.
by: 1957okie04/03/2014
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.
5/31/2014
What year is your silverado
Rachael H.
6/4/2014
Randy S.
6/6/2014
Its a 2014 Silverado 1500 Double Cab
by: Gary10/01/2023
2005 Chevrolet Silverado
Super fast shipping easy installation looks better than factory plug love the 7way and 4 way so no more dealing with adapters
by: Russell09/13/2019
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.
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.
Helpful Links
by: Walt 06/29/2023
Toyota Highlander
I’ve had a great experience with the etrailer company. I fully equipped my 2022 Toyota Highlander which did not come with the factory tow package. I bought the receiver hitch, the wiring harness kit, a brake controller plus this special 7x4 pole connector, which did not come with the wiring harness, which only had.7 pole. I also bought a special bracket to mount the connector where it needed to go. Their service was great. Unfortunately they did not carry the Anderson weight distribution chain type hitch that I purchased from Anderson. They are a well run, customer focused Company that I highly recommend
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Show More ReviewsCustomers compare HM40975 to these similar products
Ask the Experts about this Hopkins Custom Fit Vehicle Wiring
Do you have a question about this Custom Fit Vehicle Wiring?
- Comparing Hopkins and Pollak 4 and 7-Way Trailer Connectors
- In regards to Pollak and Hopkins, they are both great options. That said, if OEM parts give you any indication of quality then Pollak would be the better choice as they are the OEM for most manufacturer in regards to trailer connectors. Personally, I've had less issues with plug fitment when using the Pollak brand.
If you're looking for both a 4 and 7-way connector, I recommend the 7- and 4-Pole Trailer Connector Socket w/ Mounting Bracket part # HM40975 which also comes with a mounting...
view full answer...
VS
Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires
Product Specs:
Accessories and Parts
Trailer Brake Controller
Installation Kits
etrailer
If your vehicle already has a 4-way flat, this kit includes everything you need to install an electric trailer brake controller and 7-way connector. If there's not an existing 4-way flat on your vehicle, you can purchase one separately.
Video of Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires
Customer Satisfaction Score:
94% were satisfied with this product
6% of customers were not satisfied
- Wrong item was ordered
- Product did not meet expectations
- Did not arrive in time
Customer Reviews
Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires - ETBC7
Average Customer Rating: 4.7 out of 5 stars (2984 Customer Reviews)
If your vehicle already has a 4-way flat, this kit includes everything you need to install an electric trailer brake controller and 7-way connector. If there's not an existing 4-way flat on your vehicle, you can purchase one separately.by: Shaun03/17/2024
I purchased the brake controller and wiring harness from you all and installed it watching the video on your website. I followed the instructions to an absolute T. Got everything ready and tested the product and got an SH error code for the blue brake wire shorting out. I pinned and measured resistance and everything was coming back fine (4+ ohms resistance). I then hooked a power prope to it to find the short along the frame and nothing. I had power from the female connector all the way up to the brake controller. After 4 hours of troubleshooting, I found that the female trailer connector was shorted internally. See the attached picture. The blue and green ring terminals inside of the female trailer connector were touching. Replaced the trailer connector and now all is well.
Jenny N.
3/20/2024
It looks like you did all the troubleshooting that we would have recommended. I will have our Customer Service team reach out to you about replacing the trailer connector.
by: John J.06/12/2023
Kate M. my salesperson, had a most professional interaction with me being certain of my and my vehicle's needs. In addition, she walked me through the complete installation process. This I completed, wiring the 7-way and the Curt Discovery Controller making no errors along the way. On the first test, every terminal on the 7-way tested as it should. When we came home with the RV from the dealer, all the lights and the brakes worked flawlessly. Many thanks!!
by: Jeremy02/08/2024
Another successful order and install from etrailer.com! Always fast shipping and excellent installation guide videos! Installed on 2021 JL Wrangler EcoDiesel.
by: Sydney Shaw06/26/2023
Very easy to install! I put off installing this stealth hitch for a month dreading taking off the body panel... Just to find out it was extremely easy. The whole process took me four hours, would have been done sooner if I didn't unnecessarily take off a small battery cable that prevent the car from starting. The part of the makes me happy is the added safety from the superior strength in steel and the protruding ball to help protect from getting rear ended!
by: David12/28/2023
Installation instructions are adequate, provided you keep the wires straight. After final install everything worked fine. The online video was a little too simplistic, and skipped frustration in finding where to put things. Final outcome was a clean install. It would have been nice to have been offered the dashboard knockout piece for the Highlander. I drilled mine out and it works
by: Daniel06/09/2023
Have a 2021 Durango SXT. Bought the Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires, Tekonsha POD Trailer Brake Controller - 1 to 2 Axles - Time Delayed, and Replacement Brake Control Plug-In Harness for Tekonsha and Draw-Tite Brake Controller 12" Long. 7 wire was easy to install but break controller a little harder do to the vehicle I have. Previously bought tow hitch and 4 way wire trailer plug from etrailer. Very happy with all.
by: Teresa12/23/2020
I have a 2018 BMW X2 that did not come with a factory tow package. I had an etrailer hitch and 4 way plug installed last year and has been perfect since. I just recently purchased a camper and needed to have a Brake controller & Brake controller 7 way deluxe kit installed. My mechanic installed them with the detailed instructions that the units came with without any issues. The Tekonsha P3 is extremely user friendly and is working flawlessly. A bit overkill for my car being I can only tow max 3500 pounds, and my camper is 1 axel. this unit is rated up to 3 axles. I look at it like this way, when I trade in my BMW I will take my P3 with me. etrailer is amazing with the support & products they provide and I highly recommend them to anyone who asks me.
Teresa
12/24/2021
My Meghan said this was very easy to install, works great no complaints whatsoever.
by: Ganders02/23/2024
One year review - Exactly what we needed to go along with the Tekonsha Prodigy P2 Trailer Brake Controller (etrailer item# 90885) and a Class V hitch on a 2008 Toyota Tundra pulling a 1999 WW (WW Trailer Manufacturing) 2 axle horse trailer. We initially also ordered the Tekonsha brake control adapter for Toyota, but it did not work for our particular application, so the installer went a different direction.
by: Levi05/01/2023
It fits and works though required a modification, I think mine might have just been a bad part out the factory.
The install wasn't too bad but I spent way too long trying to figure out why my left turn signal was showing as tail lights and my tail lights were showing as my left turn signal. Turns out the wiring was wrong on the 4 pole connector (picture attached). I wasn't sure which end was wrong (the 4-pole adapter, or this adapter) so I cut and swapped two of the wires on the 4 pole adapter to make it work correctly. Definitely an issue with the manufacturing process, but the dealership wanted $2,700 to add a receiver and 7 way. Buying all the parts (and a new brake controller) from here was only around $700.
For anyone curious about this model Jeep. The main battery is under the drivers seat, it makes this install super easy because you don't have to bring anything through the firewall. I brought my wires through the small vent behind the plastic rear-quarter panel (big piece of plastic that wraps around the back) on the drivers side, then just under the carpet up to the battery. Once there I removed the rest of the grey layer from the wires, cut the black wire, and continued with the white wire and rest of the black wire to under the dash (for brake controller power and to send the signal all the way to the back).
by: David03/03/2024
The Universal installation kit #ETBC7 arrived with the Tekonsha Prodigy P2 brake controller. Everything is in great condition and is exactly what I needed. The installation instructions are straight forward and easy to understand. I can't wait to get everything installed so I can get my trailer on the road. I'll give an update after it's installed.
by: Brian 04/22/2024
Worked perfect and looks great. The 7 way plugged into the existing 4 way. That left the White(ground), black(hot), yellow(reverse) and blue (brake controller). With my Nissan Pathfinder,I only had to connect the white and black wires and this 7 way pin was setup.
by: James 03/28/2024
Easy to follow instructions and well made materials. Only plus would be heat shrink connectors but no one else provides those either. As a diesel mechanic I can say this is a quality kit.
by: Dave05/15/2023
Very nice item, very easy to install all the connectors were good quality and precrimped on the wire ends, the only thing the little plastic tab that locks the plug into the receptacle snapped off quite easily now I have to wire tie it to secure it but other than that very nice product includes everything you need for a nice clean install.
by: Christopher 03/24/2024
Easy install (I did not wire in the hot wire for the inside brake controller). I am using a Bluetooth brake controller that is working very well for my needs.
by: GireviK03/03/2024
Install went fine and all but after a single winter and less than 6 months - the internals oxidized and rusted out completely, a few pins broke. I blame poor design and weak materials, see pictures. Not sure what do to about it at this point, total junk.
Jenny N.
3/11/2024
I know that weather and road debris can take a toll on harnesses however I am surprised that it did in a short time. To help with longevity you can use dielectric grease, such as part # 11755, on the pins when making the connection to the trailer. Keep on eye on the bracket and use a rust resistant spray paint like Rustolem to touch it up. Some with use wire loom like part # 7509-1 to wrap around the wires to help better protect them. I will have our Customer Service team reach out to you.
by: Robert03/06/2024
My truck didn't need extra wire, they sent the wrong mounting bracket for the plug, and the bolts beban to rust within a few weeks. They should use stainless.
by: Christopher05/26/2021
1 year review. I installed this product on my 2017 Toyota Highlander. As a person inexperienced with vehicle electrical systems, I found the installation challenging but achievable. I appreciated the advice and videos from etrailer.com. I liked the final fit and finish on my vehicle when using manufacturer hitch and bumper kit.
After 1 year of usage, I have found 4 specific opportunities for improvement.
1. Water accumulation in the plug cover flap. After rain, I flip the flap up and water spills out of the crevice in the flap. There is also a small amount of water in the plug itself, but unclear if there is rain entering the socket or if this is from spillage when the flap is opened. This needs to be sealed to protect the plug!
2. Poor quality top mounting nuts and bolts. I overtightened one of the top bolts and it sheered off. I replaced it with zinc plated hardware. In my picture you can see after 1 year of use the included bolt on the left is corroded and the hardware store bolt looks new.
3. Poor quality front mounting screws. You can see the 4 rusting screws in the picture. These are designed to be exposed to weather, so I was surprised to find rust forming after the first few weeks.
4. Poor quality attachment point for the flat connector. The 4 way slips onto the side of the 7 way mount and is held on by rubber friction. It never stays in place and is always dangling.
One other suggestion is to offer a kit made for the newer wireless brake controllers. It could have less wire, fewer connectors, and cost less.
Because of the above problems I will have to replace the 7 way plug soon. Therefore I gave the product only 2 stars and would not recommend purchasing it.
by: Karly06/14/2022
I've had this trailer hitch on my 2013 Outback for a year now and love it! I tow a popup tent trailer and this hitch works excellently. It was a solid half day installation but my Dad and I were able to knock it out no problem! I love the discreet look of this since I'm not often towing the trailer. I couldn't recommend enough! Way better than the bulkier, less tasteful versions available.
by: Mark B05/28/2022
I installed the kit on my 2007 Toyota FJ Cruiser, which was already equipped with the factory 4 wire connector, and it was pretty straight forward. Of course, it's universal kit so there are lots of variables between vehicles, bur that being said, it fit mine just fine. The only thing I did differently is tapped the brake light circuit at the master cylinder with the included Scotch Lock rather than at the brake pedal since my vehicle has a manual transmission and the clutch pedal made it all but impossible to access the circuit there. Overall, the hardware seems to be of good quality and the instructions were fairly easy to follow. I must say the included 4-wire connector extension isn't very secure in the connector bracket, but a little RTV should fix that. I will be towing a lightweight A-frame trailer and I'm sure this is just what I need.
by: Dave02/10/2024
Works great as a controller, doesn't take any room under the dash. I was advised to unplug it and put it in the car or trailer because it would be easily stolen. Wireless may be my only option because I have it on a hybrid.
by: Chris 02/03/2024
Everything I needed was in the kit. I now have full trailer lights, brakes and electric controls on our 2022 Toyota Sienna Hybrid AWD. Thanks for the good advice, videos and quick delivery!
by: Brian 02/20/2024
Complete wiring kit and is of very good quality. I replaced the connectors that came with the kit to a heat shrink style to prevent connection problems in the future. Kit would have been 5 stars with these included.
by: Scott 04/28/2024
Absolutely everything you need to convert to 7 pole. Install was pretty straight forward on my 1996 Suburban. I will be buying another one for my new project truck.
by: Travis 12/02/2023
This is exactly what I needed to install the Tekonsha P3 controller in my 2000 Silverado. The 25' wire was installed from the engine bay to the trailer connector per the included instructions. It's been working perfect for over a year now.
by: Mark 03/11/2024
Install was done very well, and the brake controller works great
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Show More ReviewsCustomers compare ETBC7 to these similar products
Ask the Experts about this etrailer Accessories and Parts
Do you have a question about this Accessories and Parts?
- What is the Difference Between the Tekonsha Prodigy P2 and the P3 Brake Controllers?
- I would be happy to help you and compare the both the Tekonsha Prodigy P2 item # 90885 and P3 item # 90195 brake controllers. The P3 has the upgraded axis accelerometer like the P2. The Tekonsha P3 Trailer Brake Controller item # 90195, will work with both electric over hydraulic brakes on the trailer as well as electric brakes. It has a menu option on the display that allows the user to switch between the two systems.
The P2, item # 90885, will also work with both electric brakes and...
view full answer... - Differences Between Part # ETBC7 and # C59496
- The most basic wiring set up for your Tundra would be a 4-pole connector, like that included with part # C59496.
A 4-pole provides a connection for basic lighting functions like running lights, turn signals and brake lights.
If your trailer features electric brakes, a brake controller and a 7-way connector like that included with the ETBC7 would be needed. The 7-way connector included with the ETBC7 is actually an adapter that needs a functional 4-pole to plug into. Once the adapter...
view full answer...
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.