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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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 (257)
  • Q & A (205)
  • Videos (6)
  • Photos
  • Why etrailer?

Hopkins Custom Fit Vehicle Wiring - HM40975-11998

  • 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.


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 - 2020 GMC Canyon without factory 7-Way

2015 - 2020 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:  4.8 out of 5 stars   (257 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:

Great plug just right for what I wanted to do 634574



- 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:

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:

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:

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


Comments

Installation installation and wire color coding information is provided and linked above in the product description.

-- Mike L - 07/17/2019

57930

- 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:
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:

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:

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



- 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:
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:
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:
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:
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:
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:

Everything fit perfect, just follow the color matching in the video. 729828



- HM40975-11998
by:
Toyota

The fit was perfect. The only thing I can tell you is read the instructions carefully. There are wire color changes that will ruin your day. One would think that following color to color would work. It does not. After having to rewire everything worked just as expected. I also ran the brake wire to the front on the Toyota harness set just in case I add the brake controller. Thanks etrailer. 726455



- HM40975-11998
by:
2019 Chevrolet Colorado

The trailer connector is great, it fits perfectly into the bumper, and looks great. I am having trouble on the vehicle side of the wiring. I cannot get power on the brown wire for the tail light portion. 720441



- HM40975-11998
by:

Easy to install and works great. 719704



- HM40975-11998
by:
2016 GMC Savana Van

Good product. A dust cover for the back of the plug in socket would have made the product excellent. The open area on the plug will catch water and dirt. Color coding of wiring was off, usage of my volt ohm meter confirmed all the wiring connections. Liked the wiring information molded into plastic covers. 714349


Comments

When the wiring harness is plugged into the back of the trailer connector socket, there should not be an open space to allow dirt and water to get in. To make sure this connection stays free of dirt and grime, dielectric grease # 11755
Dielectric Grease for Electrical Connectors, 2 oz.
$10.76
can be used at the connection. It is always a great idea to test wires for function before making connections. I have linked a photo of these wires connected showing that the wire colors do not match the factory wire colors. It would be very rare that the colors did match by function.

-- Victoria B - 10/21/2019

62957

- HM40975-11998
by:

Great on line service 711635



- HM40975-11998
by:
2018 Chevrolet Colorado

Fit my 2018 Colorado nicely. One year later and no rusting. 715111



- HM40975-11998
by:
GMC

great look with the powder coat fit well on 2017 gmc van. 714804



- HM40975-11998
by:

Love etrailer! They always have what I need at a good price. The videos rock. The only thing missing is that I'd like one of the guys come install it for me!!! 708320



- HM40975-11998
by:

Easy installation. Sleek and simple design. A great controller at a great price provided by an excellent product outlet. Thanks etrailer.com for caring about your customers. 699541



- HM40975-11998
by:
2016 Chevrolet Colorado

Great quality quick delivery excellent how to videos on installation already order more parts from them. 686787



- HM40975-11998
by:

Just what I needed and fit perfectly!! Highly recommend this product 686556



- HM40975-11998
by:

everything as advertised 680962



- HM40975-11998
by:

Haven't installed the product yet but the customer service was amazing! Will be purchasing from them again. 680668



- HM40975-11998
by:

The item itself was fine, but would have been much easier to install had there been instructions with it. 670281



- HM40975-11998
by:

Great 668662



- 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:
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


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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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  • 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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  • Replacement Trailer Pigtail Harness and Connector for a 2018 Ram 2500
  • The 7-Pole and 4-Pole Trailer Connector Sockets w/ Mounting Bracket and Wiring part # HM40975-11998 is what I recommend using on a 2018 Ram 2500 as the pigtail and trailer connector would be the same as what would have come on the truck when rolled off the assembly line. If you have a cutout in the rear bumper for the trailer connector you can simply discard the included mounting bracket. Please disregard any fit notes on the product page. If you just need the pigtail harness you can...
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  • Installing a 7-Way Trailer Connector On a 2002 Toyota Tundra with 4-Way Flat Connector
  • Since the Hopkins 7 and 4-Way trailer connector # HM40975-11998 includes a hardwire harness it technically could be installed on any vehicle, including your 2002 Toyota Tundra with a 4-Way connector. But you will need to do some hardwiring and extra parts would still be needed so to make it more simple I recommend # ETBC7. With the ETBC7 all you will do is plug the 4-Way into it and then hardwire the remaining 4 wires. White is ground, attaches to truck frame, purple is reverse lights...
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  • Replacement Trailer Wiring Harness for 2014 Ford E-350 with Tow Package
  • Unfortunately, we do not have a harness for your 2014 Ford E-350 that will plug into the connector in your photo. For a replacement you can hardwire in the # HM40975-11998 to install a 7-way connector. You can either cut off the connector you have and wire this in place or splice in.
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  • Recommended Trailer Wiring Connector On 2004 Holiday Rambler Endeavor
  • For your 2004 Holiday Rambler Endeavor, I recommend you use a 7-way instead of a 6-way and get a connector like the 7-Pole and 4-Pole Trailer Connector Sockets w/ Mounting Bracket and Wiring - Vehicle End # HM40975-11998. This kit will give you the trailer connector, the mount, the butt connectors and the ring terminal for installation. The wiring of this trailer connection is as follows and I recommend using a circuit tester like # PTW2993 to ensure you match function to function on...
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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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  • Install Info for Roadmaster Invisi-Brake in 2018 Jeep Wrangler JL Unlimited
  • I attached a diagram that shows how the Roadmaster InvisiBrake Supplemental Braking System # RM-8700 wires to a vehicle's taillight circuits and also an install video we shot that shows this kit installed on a 2018 Jeep Wrangler Unlimited just like yours which I think will be the most helpful. The system taps into the signal lights of the tow bar lighting so that it can tell when you are applying the brakes in your tow vehicle which lets the system know it needs to start slowing the towed...
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  • How to Install a 7-Way and 4-Way Trailer Wiring Connector On a 1995 Ford F-350 SuperDuty
  • Installing a 7-Way and 4-Way combination trailer connector, like part # HM40975-11998, that you referenced, on your 1995 Ford F-350 is fairly easy, but for these trucks there are 2 different wiring situations if you do not have a factory 7-way trailer connector. If your vehicle has factory 4-Way trailer wiring at the back you can use the Pollak 7-Pole and 4-Pole Trailer Connector, # HM40975-11998, and splice the wires to the wires under the rear of the vehicle along the drivers side...
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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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  • Pollak 7-Pole Recommendation for Replacing a Damaged 7-Way on a 2004 Chevy Tahoe
  • I would recommend you cut off your factory 7-way and wire in a Pollak 7-Pole, RV-Style Trailer Connector Socket w/ Wiring Harness # PK11898. This comes with a new 7-way also, unlike the # PK11998 that you referenced that only has the harness. I attached a picture of a 7-way with all of the different ports of the 7-way labeled to help you wire it up. If you have the OEM tow package connector I would recommend the Pollak 7- and 4-Pole Trailer Connector Socket # HM40975 as a replacement....
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  • Replacement 7-Way Wiring Pigtail for 2006 Chevy Silverado 2500
  • If your 7-way twists into place in the bracket under the bumper or in the hole in the bumper, you can use the # PK11916 twist in connector and the # PK11998 pigtail. The pigtail would wire up according the description shown on its product page, which you can see by clicking the provided link. If your truck doesn't have the knockout in the bumper and the trailer connector mounting bracket is damaged as well, you could use part # HM40975-11998 which includes both the pigtail and a 4-pole/7-way...
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  • Wiring to Add to Fifth Wheel Trailer to Double Tow
  • For wiring you would not want to use Harness # 22550; instead you will want to use 7-Way Molded Trailer Plug with Junction Box # 277-000141 on your second trailer, using 10 Gauge Wire # 10-1-1 to run from the junction box to your brakes. On the rear of your fifth wheel you are going to want to use 7-Pole and 4-Pole Trailer Connector Sockets w/ Mounting Bracket and Wiring # HM40975-11998 as a way to connect the two trailers. I attached a picture showing which functions on your toy hauler...
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  • Recommended 7-Way Trailer Connector and Brake Controller for 2016 Chevrolet Colorado Work Truck 2WD
  • For your 2016 Chevy Colorado without trailering package I recommend the 7-Pole and 4-Pole Trailer Connector Sockets w/ Mounting Bracket and Wiring - Vehicle End # HM40975-11998. This will come with the wiring pigtail and everything you need. I recommend using heat shrink butt connectors like # DW05745-10 for a better seal and more resistance to the elements because of the location. I've also attached a video of the installation to assist. Then if you need a brake controller for a...
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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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