bing tracking image
  1. Custom Fit Vehicle Wiring
  2. Hopkins
  3. Custom Fit
  4. Trailer Hitch Wiring
  5. 4 Flat
  6. No Converter
Hopkins Plug-In Simple Vehicle Wiring Harness for Factory Tow Package - 7-Way and 4-Flat Connectors

Hopkins Plug-In Simple Vehicle Wiring Harness for Factory Tow Package - 7-Way and 4-Flat Connectors

Item # HM11143395
Our Price: $36.73
You Save: 21%
Custom Fit Vehicle Wiring

Will this fit?

To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.

Orders above $50 qualify for Free Shipping
Shipping Weight: 1 lbs
In Stock
HM11143395 - 4 Flat Hopkins Trailer Hitch Wiring
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

In Use/Installed

Customer Photos

Need help with installation?
Locate installers near me
Quickly and easily install a 4-way and 7-way trailer connector on your vehicle with this custom harness. T-connector plugs directly into OEM tow package wiring harness - no cutting or splicing required. 1-833-496-1390 to order Hopkins custom fit vehicle wiring part number HM11143395 or order online at Free expert support on all Hopkins products. Guaranteed Lowest Price and Fastest Shipping for Hopkins Plug-In Simple Vehicle Wiring Harness for Factory Tow Package - 7-Way and 4-Flat Connectors. Custom Fit Vehicle Wiring reviews from real customers.
  • All Info
  • Reviews (262)
  • Q & A (0)
  • Photos
  • Why etrailer?

Hopkins Custom Fit Vehicle Wiring - HM11143395

  • Custom Fit
  • Trailer Hitch Wiring
  • 4 Flat
  • No Converter
  • Hopkins

Quickly and easily install a 4-way and 7-way trailer connector on your vehicle with this custom harness. T-connector plugs directly into OEM tow package wiring harness - no cutting or splicing required.


  • Provides both a 7-way RV-style and a 4-pole flat connector at the back of your vehicle to power your trailer's signal lights
    • Designed for use with a factory tow package
    • Compatible with 5-pole and 6-pole adapters (sold separately)
  • Connects quickly and easily - no cutting or splicing
    • Locate connection points at the rear of your vehicle
    • Plug in connector
  • Includes mounting bracket
  • Protective connection terminals resist corrosion
  • Comes with dust cap for connector and terminal grease packet for electrical connections
  • 90-Day limited warranty


This custom-fit T-connector plugs into your vehicle's factory tow package wiring harness, which is located at the rear of your vehicle, slightly toward the driver's side.

Once installation is complete, the connectors will be stowed beneath your vehicle, near the trailer hitch. A mounting bracket is included to keep the connectors secure.

It is recommended that you use a small amount of grease on all electrical connections - the plugs on your automobile and the 7-pole and 4-pole connectors - to help prevent corrosion.

Vehicle Wiring

Note: Refer to the diagram above to determine if this harness will fit your application. The plugs on your vehicle must have 5 terminals on one side and 2 on the other. If your vehicle has 3 terminals on one side and 4 on the other, you will need wiring harness HM43385 instead.

43395 Plug-in Simple Hopkins Multi-Tow T-Connector with 4-Pole and 7-Way Trailer Connector

Installation Details HM11143395 Installation instructions

This Product Fits The Following Vehicles

California residents: click here

Customer Satisfaction Score:

Customer Reviews

Hopkins Plug-In Simple Vehicle Wiring Harness for Factory Tow Package - 7-Way and 4-Flat Connectors - HM11143395

Average Customer Rating:  4.7 out of 5 stars   (262 Customer Reviews)

Quickly and easily install a 4-way and 7-way trailer connector on your vehicle with this custom harness. T-connector plugs directly into OEM tow package wiring harness - no cutting or splicing required.


These plugs worked great on my 2010 Toyota Tundra. I was having problems with running lights on my trailers not working on my stock plugs but once I installed the new plugs I have had no issues. Also I moved the plug location to up beside the license plate like many of the newer trucks on the market today. I would and have recommended these plugs to others.


Mounting instructions had it mounted too far back and behind the hitch, so if you live in the mountains, and you get snow banks, its cheap and thin plastic will break the minute you back over a snow bank. Still works, but the plastic cover has holes and cracks. I gave the company a chance to make it right and they said the 90 day warranty is expired on the 1 year anniversary email asking how I liked the product. No discount on another or anything, just pay full price for a new one. No one back their products anymore.

This is a replacement for the OEM harness and will be in the same location. You can use a mounting bracket like part # C57202
Curt No-Drill Bracket for 6-Way or 7-Way Round Trailer Connector Mounting Bracket - Long
to move the harness further out from underneath the vehicle.
-- Etrailer Expert Jenny N - 06/20/2022


Perfect plug and play!!


this worked out better then i hoped for, product was spot on, i was able to relocate it also, much better place for it, thanks !

2007 Toyota Tundra

Fits my 2007 Tundra SR5 perfectly. I did not buy this as a replacement but instead an addition. My tundra was purchased without the tow kit; however, the factory left harness in and all I had to do was plug this in (check to see if yours is already there). Saved me a bunch of money as Toyota wanted over 200$ for this part... Not to mention the "labor cost." I mounted it differently because of the Hitch I bought. I used this:

Here is a link to the bracket Rick used to mount this 7-Way.
-- Etrailer Expert Patrick B - 02/18/2014

2008 Toyota Tundra

The part was an exact replacement for the factory installed wiring harness. It was very easy to replace and got everything back up and running in no time at all.

Toyota Tundra

I had to modify the bracket to fit on my tundra and there is some rust on the metal one year in. It's doing the job though, lights on trailer working A-ok.

I would spray the bracket with anti-corrosive paint to prevent the rust from spreading. Here is a help article regarding rust:
-- Etrailer Expert Sierra K - 05/26/2022

2008 Toyota Tundra

The used 2008 Tundra I bought was missing the OEM wire harness for trailer lights, even though it had the OEM traier option. From the look of the rusty old hitch, obviously it had been used and abused until someone took it off. I crawled under the pickup and cleaned the connectors with some electrical cleaner. Then made sure the mount was on the new flats. I was really happy to hear a satisfying snap when the plugs went in. I then had to run a tap down the OEM mount attach points because the nuts welded on them were rusty. Luckily the bolts provided were the same thread. It took less than an hour. I was so pleased to see my trailer light up when I plugged it in to test.


this is an easy way to hook up trailer wireing on any vehicle.


Works great. I cut a hole in my rear bumper and mounted it there. It used to be mounted below the bumper and kept being hit and bent went I went anywhere off-road. Now I'll have to tear off the bumper before I can damage it ;-)

2008 Saturn Relay

This think worked just as advertised! I am so happy and was shocked how easy it installed,
20 minutes after getting the package I had working trailer lights. It plugged directly into my factory plug and replaced my existing relay that stopped working suddenly.

It’s still works perfectly. I’m very happy with my purchase
David - 11/13/2021

2008 Toyota Tundra

Impressed by this. The plugs matched the OEM connection perfectly. I am impressed. I relocated the broken OEM trailer plug to next to the license plate. I never liked how trailer plugs have historically been located on or near the reciever.

Would definitely recommend.

2010 Toyota Tundra

Quality plug, and a perfect fit for the factory trailer wire connectors on my 2010 Tundra. I had to bend the mounting brackets a bit to get the plug to clear my Curt XD hitch, but the result is sturdy and looks good. etrailer was great to work with -- shipping was prompt, updates and tracking info was provided, and the item was as described.

2010 Toyota Tundra

The installation is easy and straightforward, but my trailer plug fits so loosely that the 7-way part of the plug comes disconnected just enough for the lights on my trailer don't stay illuminated. I'm disappointed in the receptacle fitment.


Exactly the product I needed. Easy installation and a quality product.

2007 Toyota Tundra

Install was easy, great product and fast delivery. I adjusted the mounting bracket to fit the way I wanted it to look but other than that I would recommend to others.


Mounting plate not compatible with existing OME undercarriage bracket. Had to remove OME bracket, drill new holes in new mounting plate to match existing OME threaded holes. Other than that, wiring connections fit fine.


Exact fit for my 2007 Tundra. This is a high plug and play replacement for the Toyota part at way, way less cost. Hard shell plugs connecting to the chassis harness have silicon seals and the leads into the rear of the 7 way are potted. Leads are the same colors as OEM and everything tests out. My neighbour who also had to have his harness replaced (2008 Tundra) asked me to buy one for him as well. Being in Canada it was nice to see that the shipping costs are also very reasonable compared to some US sources.
If you are Canadian, you should check these guys out.

Installed this about a year ago. Continues to work just fine. No issues with sealing. Great product. No complaints.
Paul - 08/31/2021


Needed Oem replacement for my Tundra traile connector and this almost fit like a glove/ no complaints. I do wish it was more “metal” vs plastics but it is what it is and overall it connected perfectly and the wires are a little stiff to work on the hitch; but all is good.

2007 Toyota Tundra

Perfect ..... Fast shipping also. Moved location of outlets from below the bumper.

Works perfectly...
Abe H - 01/23/2018


Great product and much more affordable than OEM. Removing the left license plate light makes for a great alternative spot for your trailer connection. The chance of hitting it on a big rock again is gone. Lots of room behind for the wire bundle.


Product was open. 4 flat work but have not try out 7way.


Product was easy to install. I actually installed it through the bumper so that I could not crush it AGAIN. With minor fabricating I had the old one out and the new one in within 25 minutes. Couldn't have been easier. Super fast delivery too!

so far so good. its still working and I am happy with it.
Justin B - 03/04/2015


Excellent product and cant wait to inst all

2007 Toyota Tundra

Worked great on my 2007 Tundra. Easy to install, got the job done, good price, and quick shipping. What more could you ask for?

Show More Reviews

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

  • Replacement 7-Way Wiring Harness for a 2007 Toyota Tundra
    Since your truck has a 5 pin plug and a 2 pin plug for the trailer connector, you will want the Hopkins Tow Package Wiring Kit, # HM11143395, that you referenced. Toyota made a change to the tow package wiring during the 2007 model year, so some 2007 models, like yours, are wired like the 2008 - 2010 models.
    view full answer...
  • Will Hopkins Tow Package Wiring Kit # HM11143395 Work with a Canadian Truck
    I spoke with my contact at Hopkins who said this part is designed to fit the 2007 to 2014 Toyota Tundra with the factory 7-way. If your 2014 Tundra came equipped with the factory 7-way plug -- the same configuration as in the photo I have attached -- then # HM11143395 is the part you want. My contact said Hopkins has not had any fit issues with Canadian models.
    view full answer...
    Image 1 for
  • 4-Way and 7-Way Recommendation for a 2008 Toyota Tundra
    Yes we have exactly what you are looking for. You would want the Hopkins part # HM11143395. This is a 4-way/7-way connector that will connect to the two connectors you have at the rear of your vehicle and will provide you with both types of connectors that you are looking for. I attached an install video that shows this connector being installed in a 2008 Toyota Tundra like yours.
    view full answer...
  • Installing Hopkins Tow Package Wiring Kit # HM11143395 on 2008 Toyota Tundra
    The Hopkins Tow Package Wiring you referenced, part # HM11143395 will plug into the trailer wiring connectors located under and behind the rear bumper. The connectors are usually found over toward the drivers side frame member. If the controller is already installed using a wiring adapter like # 3040-P, you should be all set to go. Make sure that the extra ground wire on the adapter is securely attached to a factory grounding point under the dash. You can see an install video showing...
    view full answer...
    Image 1 for
  • Recommendation for Towing a Trailer with 4-Way with a 2013 Toyota Tundra with 7-Way
    For your 2013 Toyota Tundra I would recommend you replace your current 7-way with a part # HM11143395. This will plug into the factory wiring of your truck and will give you both a 7-way and a 4-way trailer wiring connector at the rear of your vehicle so that you could tow a trailer with either style connector. I attached an install video for this product for you to check out as well.
    view full answer...
  • Replacement Trailer 7-Way Recommendation for a 2014 Toyota Tundra
    Yes, I checked with Hopkins and the Hopkins Custom Fit Vehicle Wiring # HM11143395 that you referenced has been confirmed as a fit for your 2014 Toyota Tundra for a replacement 7-way. I attached an install video for you to check out as well.
    view full answer...
  • Replacement 7-Way Trailer Connector-2007 Toyota Tundra
    The Hopkins # HM11143395 you've looked at is the correct replacement 7-way for your 2007 Toyota Tundra. The installation is pretty simple, you can see the procedure by clicking the provided link and viewing the video showing the harness being installed on a 2008 Tundra.
    view full answer...
  • Replacement 7-Way Recommendation for a 2011 Toyota Tundra
    For a replacement 7-way for your 2011 Toyota Tundra to replace the damaged one you currently have you would want the part # HM11143395 as it was designed specifically for your vehicle. I attached an install video for you to check out as well.
    view full answer...
  • How Long Is The Hopkins Tow Package Wiring Kit For Toyota Tundra
    I pulled one of the Hopkins Tow Package Wiring Kits, part # HM11143395 from our warehouse. The harness measures right at 26 inches from the end of the connectors at the end of the harness to the back of the 7-way connector. This comes with the mounting bracket and hardware needed to install on your 2007 Tundra. You can easily connect this harness to the plugs that are located behind the 7-way on your Tundra behind the rear bumper. I have attached a short video that shows the dimensions...
    view full answer...
  • 7-Way Trailer Wiring Harness Recommendation for 2008 Toyota Tundra
    Looks like you broke the 7-way of your 2008 Toyota Tundra. For a replacement we have the Hopkins kit part # HM11143395 which is an exact replacement for what you have and would work great. I attached an install video for the harness on a similar 2008 Tundra as well.
    view full answer...
  • Replacement 7-Way and 4-Way Recommendation for 2011 Toyota Tundra
    The Hopkins Plug-In Simple Vehicle Wiring Harness for Factory Tow Package # HM11143395 that you referenced is a confirmed fit for your 2011 Toyota Tundra and since it's what you said you have on your truck this would fit well and plug right in.
    view full answer...
  • Replacement 7 and 4-Way Recommendation for 2007 Toyota Tundra
    If you are looking for a replacement 4 and 7-way connector that matches what you sent in a picture of and is confirmed as a fit for your 2007 Toyota Tundra we have the Hopkins kit part # HM11143395 which is exactly what you'd need. It comes with a new mounting bracket as well. I attached an install video for this kit for you to check out as well. If you are looking for the matching harness on the truck side of the wiring though we aren't going to have that.
    view full answer...
    Image 1 for
  • Availability Of Replacement 7-way Connector For 2007 Toyota Tundra
    I have a replacement option, but the cover on the Hopkins Plug-In Simple Vehicle Wiring Harness for Factory Tow Package - 7-Way and 4-Flat Connectors # HM11143395 you purchased for your 2007 Toyota Tundra is not available as a replacement part. Instead you will need to purchase another # HM11143395 and replace the 7-way connector completely.
    view full answer...
  • Are the Pins of the Hopkins 7-Way HM11143395 Standard Width for 7-Ways
    The pins of the Hopkins 7-way part # HM11143395 that you referenced are standard in size and would work with all standard 7-way plugs. I could see a narrower pin setup still working too since it's all about making contact but there's no reason to be concerned with the pin width of the # HM11143395.
    view full answer...
  • Which Replacement 4-Way and 7-Way Trailer Wiring Harness for a 2007 Toyota Tundra
    The part you have selected, the Hopkins Tow Package Wiring Kit for Toyota Tundra, part # HM11143395, is specified for 2008 - 2010 Toyota Tundra trucks. This part has two grey connectors to couple with the factory wiring; one is a 2-wire rectangular connector and the other a 5-wire square connector. It will be a good idea to inspect the existing connectors on your Tundra to confirm the number of wires going to each so that you are certain of the replacement. Toyota did make some running...
    view full answer...
    Image 1 for
  • Replacing a 7-Way with a 7 and 4-Way on a 2014 Toyota Tundra
    Trailer wiring harness # HM11141835 is designed as a replacement for a 2014 Toyota Tundra that came with a factory 4-Way. There isn't an additional connector if your truck already has the 7-Way. A simple solution would be to replace the factory 7-Way with # HM11143395 which is both a 7-Way and a 4-Way so you would have access to both types of connectors.
    view full answer...
  • 4-Way And 7-Way Adapter For 2014 Toyota Tundra
    If you have a 7-way connector on your 2014 Toyota Tundra, the harness I recommend is the Hopkins Custom Fit Vehicle Wiring, part # HM11143395. Both the 4-way and the 7-way connector are active at the same time on the harness. You may want to check your Tundra owner's manual for any information as to its wiring capacity to avoid any potential for overloading the vehicle circuit.
    view full answer...
  • 7-Way Trailer Socket for 2012 Toyota Tundra with Factory Tow Package
    The part you referenced, Pollak 7- and 4-Pole Trailer Connector Socket with Mounting Bracket # HM40975, accepts a standard round U.S. Car connector which is the type supplied on the 2012 Tundra with factory tow package. Please see the linked photo showing the rear side of this item. As long as your truck has the round connector to mate with this socket it will serve as a suitable replacement. If it does not have a round U.S. Car connector, but instead has two small square and rectangular...
    view full answer...
    Image 1 for
  • 7-Way Trailer Connector Replacement Recommendation for a 2007 Toyota Tundra
    The replacement 7-way you would want for your 2007 Toyota Tundra is the Hopkins Trailer 7-Way part # HM11143395. This comes with connectors that will match what you have on your vehicle. I attached an install video for you to check out as well.
    view full answer...
  • Replacement 7-Way/4-Way For Toyota Tundra
    Looks like you are looking for just the 7-way and 4-way connector from the picture you sent in which we have the exact one you have now with part # HM40975 for an easy replacement. This will plug right into the round connector you have and will also easily attach to the bracket.
    view full answer...
    Image 1 for
  • Will Hopkins Plug-In Simple Vehicle Wiring Harness # HM43385 Replace Factory Toyota 7-Way
    If you have a 2003-2006 Toyota Tundra the 7-way wiring harness part # HM43385 that you referenced would essentially be the exact same thing as going with the Toyota brand connector. Most likely the Toyota connector does not have the 4-way option that comes with this as well. This will most likely be less expensive too.
    view full answer...
  • Needing to Wire a 7-Way Connector to a 2004 Toyota Tundra
    On your 2004 Toyota Tundra, there are two possible 7-way connectors that could work on your vehicle. Up under the rear of your truck there should be two plugs that you will need to plug in the 7-way. One plug will be connected to your current 4-flat plug. This plug have 4 wires going into the plug. the other plug will have either a 2 wire or a 3 wire plug. This plug will run from the brake control wiring to the 7-way. If you have the 2 wire plug, then you will need # HM11143395. If your...
    view full answer...
  • Troubleshooting Trailer Connection and Instrument Panel Lights on 2007 Toyota Tundra
    It can be a bad ground. I recommend that you check the trailer connector for corrosion as you mentioned, but also check the ground on that 7-way connector. It should be metal on metal and free of corrosion and debris. Clean up your 7-way terminals with a small brush and see if the issue is resolved. It sounds like you have the issue even then the trailer isn't connected, but if it only happens when the trailer is connected, then check the main ground on your trailer in the same way....
    view full answer...
  • Correct Replacement Trailer Wiring Harness for a 2007 Toyota Tundra
    The correct replacement trailer wiring harness for your 2007 Toyota Tundra is the Hopkins Plug-In Simple Vehicle Wiring Harness for Factory Tow Package part # HM11143395. This harness is designed for the models with a 5-pin and 2-pin connector. If you had the 3-pin and 4-pin connectors you'd use part # HM43385 instead.
    view full answer...

< Previous

Do you have a question about this Custom Fit Vehicle Wiring?

  • Why

    At we guarantee:
  • Real product know-how.

    We make sure that the products we sell are what we say they are, and that they work the way they are supposed to work. Get real advice from a real person who has the knowledge and expertise needed to solve your problem.
  • Most detailed, accurate custom fit vehicle wiring information available.

    Because we take providing accurate product information seriously, we take our own detailed product photos, demo videos and installation videos, as well as verify measurements, instructions, and vehicle fit information.
  • Installations, made easy.

    We love helping people and have the most highly-trained customer service, hands-on experience, step by step videos and installation instructions.
  • Fast shipping.

    Your order is automatically routed to get out of our warehouse and to your door as quickly as possible. Receive free shipping on orders over $99.
  • Personalized service for life.

    We provide one-on-one, personalized service from the ordering process through the life of your product.
  • Trusted since 1946.

    We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
  • Returns Policy

    Need to return an item? No problem. Please read our Returns Policy for more information.

Info for this part was:

Employee Joe V
Test Fit:
Joe V
Employee Mike L
Expert Research:
Mike L
Employee Michael H
Expert Research:
Michael H
Employee Reno H
Expert Research:
Reno H
Employee Jameson C
Expert Research:
Jameson C
Employee John H
Expert Research:
John H
Employee Adam R
Expert Research:
Adam R
Employee Jeffrey L
Expert Research:
Jeffrey L
Employee Andrew K
Video by:
Andrew K
Employee Jeff D
Installed by:
Jeff D
Employee Adele M
Updated by:
Adele M
Employee Wilson B
Updated by:
Wilson B
Employee Alexander C
Updated by:
Alexander C

At we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.