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

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

Item # HM40975-11998

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Custom Fit Vehicle Wiring

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HM40975-11998 - Custom Fit Hopkins Custom Fit Vehicle Wiring
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Product Images

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Customer Photos


  • Custom Fit
  • Trailer Hitch Wiring
  • Hopkins
  • 4 Flat
  • 7 Blade
  • No Converter
Tow a trailer with either a 7-way or 4-way plug with this dual vehicle-end connector. Included pigtail harness hardwires into your vehicle and the connector end mates with the 7-pole socket to form a weathertight seal. Call 800-298-8924 to order Hopkins custom fit vehicle wiring part number HM40975-11998 or order online at etrailer.com. Free expert support on all Hopkins products. Guaranteed Lowest Price and Fastest Shipping for 7-Pole and 4-Pole Trailer Connector Sockets w/ Mounting Bracket and Wiring - Vehicle End. Custom Fit Vehicle Wiring reviews from real customers.


  • All Info
  • Reviews (241)
  • Q & A (190)
  • Videos (6)
  • Photos
  • Why etrailer?

Hopkins Custom Fit Vehicle Wiring - HM40975-11998

Tow a trailer with either a 7-way or 4-way plug with this dual vehicle-end connector. Included pigtail harness hardwires into your vehicle and the connector end mates with the 7-pole socket to form a weathertight seal.


Features:

  • Dual connector lets you hook up to a trailer with either a 7-pole, RV-style plug or a 4-way flat plug
  • Pigtail harness hardwires into your vehicle and connects to 7-way socket
    • Includes color-coded 7-wire leads and 1/2" convoluted tubing
    • Forms weathertight seal on back of socket to keep out moisture and prevent corrosion
  • Rubber gasket provides excellent weather protection
  • Integrated stainless steel spring lets you easily open and close socket covers
  • High-impact ABS plastic construction is extra durable
  • Sturdy steel mounting bracket installs on bumper with included screws
    • Black epoxy coating resists rust


Specs:

  • 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 warranty


Dimensions of bracket

Wiring Configuration


Wire ColorCircuitWire Gauge
RedLeft turn and stop14 Gauge
WhiteGround10 Gauge
BlueElectric brakes12 Gauge
GreenRight turn and stop14 Gauge
BlackBattery12 Gauge
BrownRunning lights14 Gauge
YellowReverse lights14 Gauge


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

11998 Pollak Pigtail Wiring Harness for 7-Way RV Socket



HM40975-11998 Installation InstructionsInstallation Details HM40975-11998 Installation instructionsHM40975-11998 Installation InstructionsAlternate Instructions HM40975-11998 Installation instructions

This Product Fits The Following Vehicles

2015 - 2019 GMC Canyon without factory 7-Way

2015 - 2019 Chevrolet Colorado without factory 7-Way




Video of 7-Pole and 4-Pole Trailer Connector Sockets w/ Mounting Bracket and Wiring - Vehicle End


Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Trailer Wiring Harness Installation - 2018 Chevrolet Colorado

Speaker 1: Today in this 2018 Chevrolet Colorado, we'll be having a look at and showing you how to install the Hopkins 7-pole and 4-pole trailer connector sockets and wiring, part number HM40975-11998.Here's what a wiring harness looks like installed. Now the reason you're going to want this wiring harness over other options is because this gives us a 7-way here, which gives us the ability to tow a trailer with electric brakes, provided you have brake controller installed in your vehicle and it also gives us a 4-pole flat. So if we're towing just a small trailer and only need lighting functions, this will be a great way for us to be able to tow both trailers without needing any adapters. The most common connectors you see on trailers are either a 7-pole, like the hard top one, or a 4-pole, like our bottom.Another great feature about this, is that this gives us a very factory-like appearance on our Colorado. Matter of fact, this exact piece right here is actually used by several manufacturers during the manufacturing process on the vehicle.Our doors are spring-loaded and as you see, we have a nice rubber seal around them to help keep elements out of the inside of our connector, which could cause corrosion over time. This will make sure we have a nice solid electrical connection with any of our trailers so we don't have to worry about short circuits or poor performance from brakes or lighting.And now that we've gone over some features, we'll show you how to get it installed.To begin our install, we went head and removed our spare tire.

We have a look up on our driver's side frame rail, we'll see this bundle of wire here. We're going to unclip it from the frame using a trim panel tool. You could also use a flathead screwdriver. Now we have it where you can work with it. Now on our bumper area, right where our license plate is, on the driver's side, we have this dummy plug.

We're going to press on the tabs on the side and pull it out of the vehicle. These are the tabs that we're pressing on, on the side. If they've come unclipped when you're pulling it out, don't worry about it. We don't need them anymore. We're going to be throwing this away anyway.And now we have our new 7-pole, with our 4-pole on the bottom.

We're going to insert this through the back side of our bumper. The flat part here will face down, so it'll go in this notch. We'll simply just take it and push it in till it clicks into place.We went ahead and removed the electrical tape that covered up our bare wire leads here. You can see that they're sealed with a little bit of heat shrink. We need to remove this heat shrink and expose some of the wire, so I'm going to strip back some insulation from it.

And we'll do this on all of the wires.And with all of our wires stripped back, we can start attaching our Butt connectors. Our kit comes with standard Butt connectors, which are okay in most applications, but since we're underneath the vehicle, in an area that is exposed to the elements, we're replacing these with 10 - 12 gauge heat shrink Butt connectors, which we have available on our website. So we'll start with our thicker wire here first. Cut off the excess part that was stripped back. Take your Butt connector, stick it over the wire, and we'll crimp it into place.Now our thinner ones are a little bit different. These we'll fold back upon themselves a couple of times to make them thicker, stick them inside of our Butt connector and we'll crimp it down. And we'll repeat the same process for all the wires.Now we'll take our wiring harness that our kit comes with and we'll strip back insulation from each wire. Now we'll start making our connections. Our blue wire on our wiring harness will go to the blue wire on the vehicle. And this will be for our electric trailer brakes if we ever decide to put a brake controller in this vehicle. The white wire here will go to our black wire, this is our ground. Now we'll do our 12-volt power wire. There's this black wire. That'll go this orange wire on the vehicle. Our brown wire will go to the brown wire. Our green wire will go to our green wire on the vehicle. Now we'll take our yellow wire form our harness and then I'll go to the gray wire on the vehicle. And that leaves us with our red wire. Our red wire will go to the yellow wire on the vehicle.Now we use a heat gun to shrink down our Butt connectors.We went ahead and wrapped up our colored wires and Butt connector with some electrical tape just to help even better protect it and to give it more factory-like appearance. Now we'll clip our wiring harness back into the frame. We'll take our end here, our 7-pole already had pre-installed dielectric grease on it, but if you want to pick up some additional dielectric grease, we do have some available on our website. So we'll just match up the slot, push it till it clicks into place, then slide this lock tab towards the connector and that'll secure it.We went ahead and secured up our excess wire with a couple of zip ties behind our bumper here, so it's not going to be in the way of our spare tire or dangle below the vehicle. Now we do have zip ties available on our website if you do want to purchase some.Now we have a 7-pole tester here and we'll test all of our functions that we can. We won't be able to test our brake controller function because we don't have a brake controller installed. We'll flip the switch here and see we have constant 12-volt power going to our 7-way connector, so that's good. Now I'll hop in the truck and I'll run through all of our functions here, just to make sure they're working.Okay, I turned our headlights on and as you can see, our clearance light and tail light function's working. Step on our brake pedal now. Our brake lights are working. Turn our key on here and I'll run through our turn signals. We have a left turn signal, a right turn signal, and with out foot on the brake, we'll run through the turn signals again to make sure they both work properly. Now I'll start the engine and put it in reverse to make sure our reverse light function will work.Perfect. All of our functions are working properly.And that completes our look at and installation of the Hopkins 7-pole and 4-pole trailer connector sockets and wiring, part number HM40975-11998 on this 2018 Chevrolet Colorado.


Customer Reviews

7-Pole and 4-Pole Trailer Connector Sockets w/ Mounting Bracket and Wiring - Vehicle End - HM40975-11998

Average Customer Rating:  4.9 out of 5 stars   (241 Customer Reviews)

Tow a trailer with either a 7-way or 4-way plug with this dual vehicle-end connector. Included pigtail harness hardwires into your vehicle and the connector end mates with the 7-pole socket to form a weathertight seal.

- HM40975-11998
by:

This is the same look as a factory install. I was greatly pleased with the overall installation. Super easy to wire up and looks great in the bumper. My truck has the clean factory look for way less than what they had quoted for an install. 617820



- HM40975-11998
by:

Best service and experience I have had with an Internet order in years. Alyssa, took my order, (I called to confirm that I was getting exactly what I needed.) She was extremely thorough and even called their tech support ( who were right there handy and knew what they were talking about). We confirmed exactly what I needed, she asked me to send her a pic from under the truck at the hitch to confirm since I just drove it off the lot. The hitch and the wiring harness were a perfect fit and I got it all installed with out any issues. She even sent me a video of the installation of both the hitch and the wiring harness. It went flawless and I'm hooked. I'll be a customer of Etrailer from now on. I live way out in the country and it's a long drive to town of things don't go right. This was a fantastic experience. 350388



- HM40975-11998
by:

I was tired of having connection issues with the 7 pole to 4 pole adapter and opted to replace my existing plug with one that had both the 7 and 4 pole sockets. This looks like it will last. The 4 pole socket has sturdy brass sockets that should last as long as the truck. It would have been nice to have a piece of paper with the color codes for the wiring harness but a few minutes with an ohm meter solved what went to what. The longest part of the install was figuring out where to mount the bracket. 65615



- HM40975-11998
by:

From start to finish, this has been a great experience! I wrote a detailed email explaining my situation. Within 24 hours, I received a response with a link to the exact product I needed. Product was priced well with good shipping rates. Order was shipped out 2 days later and I received an email that it would get to my house on Tuesday, but the part showed up 3 days early!! It's almost like Christmas!! I haven't yet had time to install the product, because I literally received it just one hour ago, but it's easy to tell that this is a super quality product. I was actually expecting a flimsy bracket that might have to be reinforced...not required. Very heavy duty bracket with self-tapping screws included along with wire connectors and of course the connector itself. I am very happy with my purchase and if will follow up with pictures and more if I can. 275434


Comments

Excellent! Simple install for most anyone with a basic understanding of wiring. Connector works as great today as when I first installed it shortly after posting my initial comments.

Brian R - 07/23/2017

26485

- HM40975-11998
by:

Does what it says ... says what it does. The install video was a big help too. 573100



- HM40975-11998
by:

It was okay - worked for a few months, then corroded and gave up the ghost. Nothing really above the competition. I pull a farrier's trailer every day, 6 days a week, so I absolutely rely on a good wiring harness for lights and electric brakes. A vastly better option (which I have had since the last one died), that is still going strong without a flinch despite being covered in road dust and salt, are these: https://www.etrailer.com/Wiring/Pollak/PK11404.html https://www.etrailer.com/Wiring/Pollak/PK11402.html Solid metal construction, never get a loose connection, no corrosion - not even on Virginia backroads in the winter. Now, those above are only 4-pole connectors, they do make a 7-pole version as well (which I use). I whole-heartedly recommend them. 269525



- HM40975-11998
by:
Honda Pilot

This product is very good amd well woth the price. I would have given it an excellent rating if the wiring information that comes with it was a little more descriptive, especially for someone that doesn't do much electrical wiring. If I hadn't ordered the plug-in tester, it would have been a very long afternoon. The bracket is excellent, the self-tapping screws work fine if you drill a pilot hole before trying to insert them, there is plenty of extra wire to work with and the connector and harness snap together perfectly. The locking clip on the wiring harness is a little tricky, so watch the installation video before you start. All of the parts seem to be made from quality materials. Be sure to have a multimeter available while deciding which wires from your tow vehical need to be connected to the harness wires and have a friend around to help with the testing process. 233838



- HM40975-11998
by:
Ford F-350 Super Duty

This is a great affordable option to replace your worn out or damaged OEM trailer recepticle. The fit is perfect. It is made by Pollak which is the same as the Ford one you replace. I damaged mine and took the pin connectors out of new housing and installed it on my F350 without splicing wires. Worked perfectly. 483732



- HM40975-11998
by:
Chevrolet Colorado

The service provided by George and Lacey was the best part of this transaction. Lacey helped me find the right parts and sent me a video about installation. They both worked to correct my order and customized the delivery date. The parts were precisely what I needed to get power to the bumper for a small trailer and bike rack. A few comments: order more butt connectors as the mfr sent 6 and there were seven wires on my Colorado. When connecting the tail harness to the truck harness, be sure all the wires on each side are the same length. The yellow wire strippers take some getting used to, so practice on several wires first. I’m an ‘average’ handy person so these last two suggestions didn’t come naturally to me, but overall this was a pretty simple installation. When I tested it and all the lights worked, I was a happy camper. 568900



- HM40975-11998
by:

Product arrived on time and was exactly what I needed. The sales agent was extremely knowledgeable and eager to help me decide on the right product. I encourage all to buy from etrailer corporation. You will not be disappointed. 552473



- HM40975-11998
by:

So far so good, I spliced in the old rotted harness wires cut out the old and in with the new , great product works fine . I’ve pulled my trailer a few times and was all good, product was exactly what I needed. Thanks 562208



- HM40975-11998
by:

This is a great idea for the person that tows several different types of trailers. Our repair center has been using etrailer for many years and they have great products and great customer service. 151868


Comments

Most all products I purchase from you are for my customers. I manage an Auto Repair center and we provide trailer hitch and wiring installation. I have spoke to this customer recently and they are happy with the product and have not had any problems.

Valley I - 09/28/2015

15271

- HM40975-11998
by:
2002 Chevrolet Silverado

This is exactly what I was looking for my 1999 GMC Sierra 5.3. It didn't have the factory tow package and I wanted both connectors. The 2002 Silverado video is perfect, but if you have a 99 the wiring colors are different. For mine: light green = backup, brown = running lamps, dark green = right turn, yellow = left turn, and white = ground. 64242



- HM40975-11998
by:
2016 GMC Canyon

Great product! Fits the factory hole in the bumper perfectly. Attaching the wires was a pain but that was due to GM saving $1 by just cutting the wire ends and not installing a plug......but they were all there so that was a plus. If you do install this setup AND you install a hitch, leave the spare tire down while you attach the wires. There's plenty of wire with the plug but the factory wires are up kinda close to the underside of the bed so not a lotta room. ALSO spend the extra couple dollars and get the heat shrink butt connectors, they're available here in whatever size you need. Another thing to think about, if you plan on eventually installing bed/ cargo lights any time soon, now is the time to add that extra power wire before you crimp, shrink, and tape the hot wire...... 343311



- HM40975-11998
by:
1987 Chevrolet C/K Series Pickup

Excellent quality and strength. Why skimp on something as important as your hitch? I have purchased three of these Draw Tites - I guess a repeat customer will scream about the true quality a company can garner from repeat customers. When you pull show cars worth six figures, you can't afford a poorly made hitch. Step up, step out, and don't fret what you are pulling. 371585



- HM40975-11998
by:

Very good product and a complete kit to do what the vehicle manufacturer(Ford) skimped on. Their wires were too small--but what can you expect for a $60,000 plus vehicle!!! 218030


Comments

Great

Ron A - 08/08/2016

20098

- HM40975-11998
by:

Found what I needed, ordered things, and received them promptly. Sure beat driving miles in my area looking for the vendor who MIGHT have what I needed. And the price was below what I was able to find locally. Seems that retailers do not stock specialty items much anymore, so why not order for myself? 329580


Comments

I have not experienced any problem with the wiring product. Everything works as expected. Thanks to your company for marketing a reliable and affordable aftermarket wiring product.

DaveB - 12/27/2017

32260

- HM40975-11998
by:
2016 Chevrolet Colorado

Easy installation! Kit only supplied 6 connectors when there were 7 wires ...... oops! 362344


Comments

Steve, the 6 connectors are correct. The ring connector that attaches to the ground wire is the 7th connector.

-- Laura E - 01/24/2018

33610
Comments

I still like the wiring harness I purchased from your company last year. Thank you for asking.

Steve B - 04/04/2018

36814

- HM40975-11998
by:
2018 Chrysler Pacifica

Bought this trailer connector to use instead of the flat 4 wire connector. Wanted a nice finished look on the rear of the vehicle without any hanging wires. Mounts to the Draw Tite mounting bracket without any modification. Only minor problem I had was with the wiring. The wire colors are not the same between the 4 and 7 pole connector. A call to etrailer got the problem resolved. Great customer service! 517709



- HM40975-11998
by:
2012 Dodge Ram Pickup

This is a fantastic quality part and an excellent alternative to Ford's OE connector (the difference being this one is far less expensive and does not have the Ford emblem. I used the connector to replace the 7-Pin/4-Pin combination plug on my 2002 Ford Super Duty after swapping the bed/bumper/tailgate from a 2012 Super Duty. It is a vastly superior connector in that the 4-Pin is integrally wired with the 7-Pin as opposed to having the 4-Pin spliced into the harness. I would definitely recommend this part for any towing rig. I eve put one on my father's 1995 Dodge Ram 2500. Don't hesitate to order this one! 100799



- HM40975-11998
by:
2017 Hyundai Santa Fe

I have a 2017 SantaFe I have 2 different trailers and need both types of plugs I am using this product along with a curt class III hitch and a curt 56332 wiring harness. I want the finished outlet to be behind the factory cover I had to modify the Hopkins bracket by bending it in the opposite direction on a angle because the hitch is in the way .a little effort and its great jeff 436582



- HM40975-11998
by:
Chevrolet

Works great as a replacement for an old six way round pin conductor on our '03 Chevy Express conversion van that didn't connect to our trailers. We use it nearly every month hauling the Boy Scout trailer with the standard 7-way flat connection around to our various outings. It's great having the dual 7-way and 4-way hook up options in one set up. The wiring pigtail made connections easy and straight forward. I'd buy it again if needed. 360517



- HM40975-11998
by:

Fit like a glove where the plug was in the bumper. Easy to convert the four pin flat to the 7 pin using etrailer parts and instructions. 293467



- HM40975-11998
by:
2006 GMC Sierra

Only gripe, the plug wiring on the back is at a 45° and the plug in on the front is at a 90°, so dont wire up the wires by the wiring plug but how the plug in on the front would plug in, I made the mistake, but other than that, works great, looks great, fixes botched wiring like my truck had with just twisted together and taped up wires, easy install 538362



- HM40975-11998
by:
2004 Ford F-150

Received trailer plug very quickly. I was replacing the pigtail on a factory wiring harness on a 2004 Ford F150 and this wired in with just a few of the wire colors not matching up, but knowing what the colors were on the factory they were very easy to match up and wire together. 391929


Comments

Thanks Jeremy for the great review and rating!! Hopkins appreciates your business.

Hopkins C from - 06/20/2017

25203

- HM40975-11998
by:

Used this item before have one in my up now is going in motorhome 133105


Comments

Worked good should be a waterproof boot on the wiring or shrink tubing to keep water out as it is on back of rig behind rear tires

Mark l - 05/28/2015

12119

- HM40975-11998
by:
Ford

Quality product, good price, relatively easy to install. A few observations that do NOT reflect badly on this product. I had a broken pin in my old connector. If I had known that the plug on the end of the new wiring was identical to the factory plug, I may not have cut & spliced, I would have tried to plug it in to the new connector! The wire color on the new harness was standard & correct. black=positive, white=ground, blue=electric brake... but did not exactly match my ford harness. And lastly, the factory bracket was welded to the hitch so I had to chisel/grind it off to mount the new on in the same place; though there's room on the opposite side to mount the new one without removing the old one. 269283



- HM40975-11998
by:
Toyota Tundra

very well made product. I would recommend this to anyone. The installation could be more detailed but if you can use a meter you should be fine. I have put one on my wife's truck and mine. I will be ordering from etrailer again. A video for Toyota Tundra would be nice too !!!!!!! What about it etrailer ???? 134337


Comments

Thank you for asking.Im very satisfied and will recommend etrailer.com to anyone.

Nolton L - 06/09/2015

12408

- HM40975-11998
by:
2017 Chevrolet Colorado

Great product and very good quality. The 7/4 pole connector fit right into the factory hole on my wife's 2017 Chevrolet Colorado. The ONLY reason that I did not give 5 stars is that it came with NO INSTRUCTIONS. I had to go back to the website to search for instructions and still no instructions. I only found a picture of one already installed and prayed it was correct. We used the boat yesterday and the picture was correct and lights worked. Please include instructions for the future. 429093


Comments

Great idea, Stephen! We do have an installation video on the 2016 Chevy Colorado, which may be found here:

-- Laura E - 09/06/2017

27948

- HM40975-11998
by:

Quality product easy install very satis fied 661619



- HM40975-11998
by:

Staff on the phone was super helpful confirming whether this would be the right product. Overnight shipping was incredibly fast. Item arrived before noon the next day. 645199



- HM40975-11998
by:

I purchased this kit after watching the tutorial YouTube video. The video was really informative and helped alot. Great customer service as well! 642409



- HM40975-11998
by:

Easy to install thanks to the video. Good quality product. 639826



- HM40975-11998
by:

Quality product delivered as promised. 639456



- HM40975-11998
by:
2012 Ford F-250 Super Duty

Replaced my factory mount on 2012 Ford F250. This one is much better. 638586



- HM40975-11998
by:
Ford

Perfect ! Great kit to wire in a 7 wire connector if you don’t have one! Just finished installing on 94 ford bronco. Very simple 636379



- HM40975-11998
by:

Nice vehicle plug with weather-proof covers and a mounting bracket. 636220



- HM40975-11998
by:

Have not yet installed, but looks like a sturdy, well built trailer connector. Have seen others installed and decided it as a must-have item. 636155



- HM40975-11998
by:

Great 635721



- HM40975-11998
by:

Great plug just right for what I wanted to do 634574



- HM40975-11998
by:
Chevrolet Colorado

Very pleased with this product. The connector snapped right into place on my Colorado and the installation video was great help! Had it done in no time and plugged in the trailer and all lights worked perfect. Thanks! 628029



- HM40975-11998
by:

Great product....directions were easy to understand. I will definitely use this company again. 625269



- HM40975-11998
by:
2012 Jeep Wrangler Unlimited

Excellent quality product and service. Always have the exact part I need. I only order from etrailer. 614537



- HM40975-11998
by:
2006 GMC Sierra

I love the setup of the 7way and 4 way connector in 1. The wiring was a little tricky since i was hard wiring it directly into factory gm wiring and only a few wire colors matched, but with a few Google searches i figured it out. Works wonderfully! 612777



- HM40975-11998
by:

Worked perfectly ! Really appreciated the installation video ... took away any guesswork. 612672



- HM40975-11998
by:
2018 Chevrolet Colorado

Easiest trailer light hookup ever! All the wiring was in place with my 2018 Colorado. Followed the video to get the wires right. No need to get into the tail lights. A little pricey but well worth it. Used the heat shrink product as shown in the video. 612362



- HM40975-11998
by:

The mounting bracket and wiring was exactly what I needed to fix my broken one. Quick shipping also. 609388



- HM40975-11998
by:
2017 GMC Canyon

Product is exactly as described and easy to install. Factory fit for my 2017 canyon. Quick delivery as well. Couldn't get my order to go through online so I had to call and had great customer service. 606824



- HM40975-11998
by:

Great item 603898



- HM40975-11998
by:
1998 Jeep Wrangler

Have yet to install, but looks like a quality product 602323


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Ask the Experts about this Hopkins Custom Fit Vehicle Wiring
Do you have a question about this Custom Fit Vehicle Wiring?


  • What Wiring Harness do I Need for My 2017 Toyota Tacoma Without the Factory Tow Package?
  • The wiring harness you mentioned, part # HM40975-11998, is only designed to fit the 2015-2017 GMC Canyon and Chevrolet Colorado. To tow with your 2017 Toyota Tacoma, you will need the Tekonsha OEM Replacement Vehicle Wiring Harness with Brake Controller Adapter, part # 22117, which is a custom fit for your vehicle. Once your installation is complete, the 7-way connector will be stowed beneath your vehicle, near the trailer hitch. Mounting brackets, # 18140 and # PK12711U are sold...
    view full answer...

  • Adding 7-Way and 4-Way to 2017 Toyota Tacoma Without Tow Package
  • The reason the 7-Pole and 4-Pole Trailer Connector Sockets # HM40975-11998 has more wires than the 4-pin is because this part is used for a 7-way and 4-way. We can help accomplish your goal but first you would first need to add 4-way # 118685. From there you will need # 5506, which is similar to the # ETBC7, to get the functions of the 7-way and you can then hardwire # HM40975-11998 to get the look you want. There is no video for how to accomplish specifically what you want to do, so...
    view full answer...

  • Recommended 7-Way And 4-Way Wiring For 2017 Jeep Wrangler Unlimited Sport S
  • For your 2017 Jeep Wrangler Unlimited Sport S, I recommend you start with the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118416. The connection points for this adapter are behind the driver's side tail lights. Then you will want to use the 7-Pole and 4-Pole Trailer Connector Sockets w/ Mounting Bracket and Wiring - Vehicle End # HM40975-11998 to hardwire to that 4-way. Next, you will want to use the Draw-Tite Wiring Kit for 2, 4, 6, and 8 Brake Electric Trailer...
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  • Comparing Hopkins Trailer Wiring Connectors with 7-Way and 4-Way Functions
  • The 7-Pole and 4-Pole Trailer Connector Sockets w/ Mounting Bracket and Wiring - Vehicle End # HM40975-11998 comes with a mounting bracket so it can be installed in a number of different locations including the factory bumper location of some vehicles and 4 feet length of wire. You can use the no drill bracket # 18140 to give more mounting options. The Hopkins Multi-Tow 7-Way Blade and 4-Way Flat Trailer Connector - Chevrolet/GMC # HM11141144 connects to your vehicle's bare factory...
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  • Is the 7- and 4-Pole Trailer Connector Socket a Fit for Ford Trucks
  • The 7-Pole and 4-Pole Trailer Connector Sockets w/ Mounting Bracket and Wiring # HM40975-11998 is a hard wire application, as you can see in the linked installation video we made of this being put on a 2008 Ford F-250. If you only need to connect the plug, which is 7- and 4-Pole Trailer Connector Socket # HM40975, that is a direct replacement for many different years, makes and models of Ford trucks with a factory 7-way; for example it is a fit for a 2018 Ford F-150. If you let me...
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  • Recommended 7-Way Trailer Wiring Harnesses For 1996 Dodge Ram Pickup
  • We have all of the wiring you need for your 1996 Ram, but there is no all-in-one harness available. First I recommend part # HM40975-11998. This is a 7-pole and 4-pole trailer connector with the bracket and wiring. This will hardwire to the existing wires you have for your 4-way. You can use a circuit tester like part # 40376 to identify the wires when you are attaching them. Next, I recommend part # 5506. This is a universal wiring kit for brake controllers. This includes wiring...
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  • Troubleshooting Trailer 7-Way Wiring With Constant Power on Lighting Circuit
  • Often when a trailer harness lighting circuit stays on continuously, even when the vehicle lights are okay and function correctly, the issue is corrosion inside the vehicle socket or the trailer plug that allows the 12V auxiliary power signal to bleed over to that other light circuit. On a 7-way wiring setup the 12V power circuit is carried on the pin at the 1-o-clock position as you view the socket on the vehicle. Please refer to the linked photo. Just next to this pin, at the 3-o-clock...
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  • Parts Needed to Install 7-Way Trailer Socket on 2015 BMW X5
  • The Draw-Tite # 75600 and Curt # 13077 are the confirmed hitch fits for your 2015 BMW X5 so long as it is not the M model; for that model we have no hitch. Both of these hitch items are fairly involved installations as hitches go; you can refer to the linked video for the Draw-Tite. For wiring, what you need depends on the trailer you intend to tow. For a basic aftermarket 4-pole harness that just carries trailer lighting signals (for a trailer with no brakes or other power requirements,...
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  • Weight Distribution and Brake Controller Recommendation for 1997 Ford Ranger
  • Let's start with the weight distribution and go over what you'll need to know before getting into specific units. The first bit of information you'll need to know is your total tongue weight (TTW), which is the tongue weight of your fully loaded and ready to go PJ trailer plus the weight of any cargo behind the rear axle of your 1997 Ford Ranger. To determine your trailer's loaded tongue weight you can use a scale such as the Sherline # 5780 or by using one of the methods outlined in...
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  • Adding a 7-Way to 2010 Chevy Express Van
  • If your 2010 Chevy Express had the factory tow package you would have a harness under the vehicle and behind the rear bumper that you would plug in. Since you say there are wiring bundles everywhere you are almost certainly correct that you do not have a factory tow package and you will need to add a 7-way by wiring it in. To add wiring you are going to need the 7-Pole and 4-Pole Trailer Connector Sockets w/ Mounting Bracket and Wiring # HM40975-11998 and hard wire everything in. To...
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  • Recommended Hardwiring of 7-Way Connector on a 1999 Chevy Suburban
  • Hardwiring the Hopkins 7-Pole and 4-Pole Trailer Connector Sockets w/ Mounting Bracket and Wiring # HM40975-11998 will work just fine for your 1999 Chevy Suburban. Some models do have the brake (blue) and hot lead (orange or red) wires already ran from under the hood to the end of the driver's side frame rail so I recommend checking into that. If they are not there, then you will want # 5506 to finish this wiring. I've attached a video of the # ETBC7 wiring that will be almost identical...
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  • Will Hopkins 7-Way and 4-Way part # HM40975-11998 Fit 2017 GMC Sierra 1500
  • Your 2017 GMC Sierra 1500 will work great with the # HM40975-11998 that you have but in reality you only will have to use the 7-way portion of the setup. The # HM40975 portion of the setup is just the 7-way and bracket which will attach directly to the 7-way wiring that your truck already has. There would be no need for hardwiring. Check out the install video I attached for more info as well.
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  • Installation of Trailer Wiring Harness and Parts Needed to Tow a Trailer with a 2016 Chevy Colorado
  • If your 2016 Chevrolet Colorado doesn't have the factory wiring for a 7-way trailer connector, like # HM40975-11998, behind the bumper (Or anywhere else) you will first need to install a 4-way connector using # HM11141164. This plugs in behind your truck's taillights and then a hot lead ran up to the battery and connected using a fuse holder. Once the 4-way is installed you can use our # ETBC7 kit for a fully functioning 7-way. This will also provide you with the necessary wiring to...
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  • 7-Way Recommendation for 2017 Toyota Tacoma with Capped 7-Way Connector
  • If you have a round plug behind the rear bumper of your 2017 Toyota Tacoma for plugging in a 7-way harness what you would want is the part # HM40975 which will plug right into it. The part # HM40975-11998 includes a harness for hardwiring the harness to the vehicle that would not be needed if you had the connector present already.
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  • 2016 Toyota Tacoma TRD Sport 7-Way Recommendation to Fit Bumper Cut Out
  • You are on the right track for sure to install the # HM40975-11998. You would first need to start with a 4-way like part # C56349 and then to convert it to a 7-way you would need to cut off the 4-way of this hardwire and then hardwire it to the part # HM40975-11998.
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  • 7-Way Trailer Wiring Recommendation for 2017 Chevy Colorado
  • Your 2017 Chevy Colorado might have the round socket already to allow the part # HM40975 to install without needing the wiring harness. But if you did not have the connector the part # HM40975-11998 will fit and work well. Check out the install video I attached for more info on how this installed on a similar 2016 Chevy Colorado.
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  • How to Complete Electric Brake Wiring to Trailer Connector
  • It sounds like you have a junction box like part # 3375601101 installed on your trailer and the brake output wire from the assemblies are ran to this but not to the trailer connector. If that is the case than all you will need is a ring terminal like part # 44-5310A and some spare wire like part # 10-1-1 to finish running the brake output wire from the junction box to the trailer connector. It sound like you may also need a new trailer connector as well and for that I recommend the...
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  • Recommended Wiring For US Car Connection And 7-Way Trailer Connector On 2017 Honda Ridgeline
  • If you have a 7-way on your 2017 Honda Ridgeline, the US Car connector in your picture will allow you to put it right in line with a factory 7-way...just plug and play. If you don't have a 7 way, I recommend the 7-Pole and 4-Pole Trailer Connector Sockets w/ Mounting Bracket and Wiring - Vehicle End # HM40975-11998 and hardwire it utilizing the # 5506 wiring kit. This will give you a 7-way US Car connection as well as a standard 7-way trailer connector as well as the 12V battery run...
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  • How to Remove 7-Way Trailer Wiring Plug from Socket on 2015 Audi Q7 with Factory 7-Way
  • A vehicle 7-way harness will have a locking tab of some type to ensure the wiring harness remains connected to the socket. This is an important safety feature for maintaining all of the trailer signals but especially so for the power to the trailer brakes. The exact appearance and operation of these locking tabs can vary. For example, on Hopkins 7-way harness # HM40975-11998 there is a small grey locking tab, shown in one of the linked photos, that slides to lock/unlock the connection....
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  • Replacement Trailer Connector for a 2012 Ford Super Duty
  • The harness you see pictured in connector # HM40975-11998 plugs into the back of that connector so it would look like the opposite of what is on the back of the connector. If you do not need the wiring harness part then you would just use # HM40975. If you do need the harness it will have to be wired into the trucks tow package wiring by function by testing the vehicle wiring using a circuit tester such as # 40376 to determine the functions. The wire functions of the harness in # HM40975-11998...
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Info for this part was:

Test Fit:
Joe V
Expert Research:
Michael L
Video by:
Andrew K
Written by:
Lindsey S
Expert Research:
Robert G
Expert Research:
Michael H
Installed by:
Jeff D
Expert Research:
Jameson C
Video Edited:
Joshua S
Video Edited:
Jacob T
Expert Research:
John H
Expert Research:
Adam R
Video by:
Kathleen M
Video Edited:
Dustin K
Installed by:
Cole B
Expert Research:
Jeffrey L
Test Fit:
Randy B
Video by:
Chris R
Updated by:
Sarah W
Updated by:
Jenny M
Test Fit:
Brent H
Updated by:
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