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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 # HM43534
Our Price: $66.78
Custom Fit Vehicle Wiring

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Shipping Weight: 1 lbs
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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. 1-636-245-0062 to order Hopkins custom fit vehicle wiring part number HM43534 or order online at Free expert support on all Hopkins products. Great prices 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.
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Hopkins Custom Fit Vehicle Wiring - HM43534

  • Custom Fit
  • Trailer Hitch Wiring
  • 4 Flat
  • 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.

43534 Plug-in Simple Hopkins Multi-Tow T-Connector with 4-Pole and 7-Way Trailer Connector

Installation Details HM43534 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 - HM43534

Average Customer Rating:  4.8 out of 5 stars   (160 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.


organize for the June excursion. After investigating weights and amenities of a plethora of rental RVs, it occurred to me that we would need a 7-pin wiring connector instead of the 4-pin connector that the Nissan dealership installed on our 2019 Frontier. I concluded that the jumper harness under the passenger side kick plate was already in place – and that any 7-pin harness would use the same jumper. A scan of sites listed by Google made it abundantly unclear how to proceed. Multiple websites offered a 7-pin harness – but no 4-pin option. YouTube videos showed how to install a harness and a jumper – the one we assumed was already in place. The eTrailer website offered an optimum, combined, 4-pin and 7-pin harness specifically configured for a Frontier and numerous, satisfied Frontier owners confirmed the eTrailer harness operability. All I needed then was to confirm the process of disengaging the existing 4-pin harness and removing the cover to the dissimilar 7-pin harness; I was unsuccessful the three times I had tried. One website, that showed how simple the installation process was, yet cleverly skipped those two procedures. So, I called the Nissan service department and was told one of two mechanics would call me back; they did not. A second call went to the parts department voice mail -- with no return call. As a last resort, I visited the same Nissan dealership and after discussions with two customer service agents and the parts man, I was taken to a mechanic in one of the shop bays for expert advice. Oddly, he was not aware of any dual harness for a Frontier newer than 2022. Since I knew otherwise, I simply asked for a demonstration on how to manage the harness connectors. From a drawer full of Nissan cables, he pulled out a harness and demonstrated where to push with a short screwdriver. Easy! After deftly reproducing the tasks at home, I promptly ordered a cable from eTrailer. The package arrived last evening and an examination of the contents suggested that the process would be as simple as YouTube videos indicated. My installation took about 45 minutes – much of which was going back and forth to the workshop to get different items. The included, bracket-mounting bolts were longer than necessary so I sought shorter ones. A short flathead screwdriver was insufficient; an offset screwdriver was also necessary to tighten bracket bolts properly. The box wrench to mount the bracket was not the same size required to connect the harness to the bracket. The flashlight bulb blew halfway through the installation; my coffee mug spilled; I lost a lock washer in my shirt while on my back and then to cap it all off, I had to disconnect and reconnect the harness after taking pictures because I had neglected to apply the terminal grease. The installation was very straightforward and there was no excess cable to hide or wrap in the undercarriage. No bundle ties required. Perfect. Unfortunately, I cannot test the 7-pin harness at home. Well, I could with my multimeter – but there is no one else home to pump the brakes.
Thank you, eTrailer, for a great product.


Something just shorted out after 9 mos and fried the wiring in the truck too. It’s in the shop being diagnosed. Hundreds of dollars. Don’t know if it’s this harness or something else. But it’s a pain. Ordered another one so we can diagnose it.


This harness was more than I had expected. The bracket lined up perfectly with the existing holes on bottom of bumper and the installation and testing literally took minutes. So far I’m very happy with this product, especially the fact that no adapter is needed for the 4 pin connection.


It was an easy install, has held up to abuse, and has come in handy switching between my utility trailer with a 4 pin connector and my camper with a 7 pin connector!

2016 Nissan Frontier

Easy installation, great quality. The wire was a little short for my application

Year later and no issues. Good quality
Richard - 08/22/2023

2012 Nissan Frontier

It was harder to take out the old wiring than it was to put in the whole new plug and hanger. After I finished the test was perfect for both the 4 and 7 pin plugs. Thanks trailer!

2019 Nissan Frontier

Product work as stated. I had a slight problem with mounting bracket, holes did not line up with factory bracket. But it was resolved by mounting the supplied bracket over the factory bracket.


I am ecstatic because it actually works. When my truck was new, the Nissan dealer referred me to [online] for a trailer hitch and wiring. Bad move. They and I never knew that there were sockets right under the bed just waiting for a seven way "plug and play" device. What they installed was a dysfunctional mess anyway. After that I have gone through the same nightmare with other "service providers". When the last one failed I got this product from etrailer, disconnected a spider's web of stupid makeshift wiring and simply plugged it in. I should not be admitting I was so gullible. Once again etrailer saved me from myself, with a simple installation by myself.

2014 Nissan Frontier

Recently went into business for myself. My old plug on my 2014 Nissan Frontier was not holding up. I messed it up during the install. Needing to pull a trailer I began searching for a plug that would work. I wanted something that was plug and play and allowed either a 7 way or 4 flat connector. During my search i came across the Hopkins Plug-in. It is designed to be mounted underneath the truck with the provided bracket. I emailed I got a response back almost immediately from George. I told him what my plans were for the connector. He said that it should work as the connector didn’t need the bracket to be mounted. Since I already had a hole drilled to 2 1/4”, I prepared myself to notch my bumper a little in order for it to fit. What a pleasant surprise, this connector fit right through my previous hole. I did have to drill 4 additional holes 11/32” to mount it. I used paint primer to cover those holes up before permanently installing the connector. It truthfully is plug and play. I have attached pictures of what it n ow looks like. I highly recommend this product and company.


My 2016 Nissan Frontier had to be towed out of a swampy mess after being run off the road with someone texting or drunk. Anyway when being towed out the factory trailer wiring connection was damaged.

I have to give this company and the product 5 stars plus due to the ease of finding the correct replacement. It was received in 3 days and matched the original wiring connections with nothing more than removal and replacement. I did have to drill some mounting holes on the original mounting plate which took a few minutes tops. It not only is a perfect replacement but a huge improvement with both types of connectors.


2011 Nissan Frontier

pluged wire socket in. mounted trailer end' ssolved my problem. can not ask for anything better.

2014 Nissan Frontier

Well made, fits my truck perfectly and the interaction with etrailer personnel was very professional and easy.


I ordered this unit for my 2014 Nissan Frontier. I like the fact that both options for trailer electrical connections are built in on the product. It didn't fit the bracket for my old connector as I expected it to and my OEM bracket is welded to the frame, not bolted, so the mounting bracket sent with the unit wasn't useful. I drilled a couple of holes in the existing bracket to accommodate the new connector and it's working fine.


Just received, haven't hooked up yet but seems to be good quality + the staff was very helpful with my question s.

Working out great.watched a bunch of utube videos for install + helped out a lot. Im not very handy but had no issues.
Mike - 05/27/2023


Left brake light does not work. The assembly screws are low quality.


Easy to install and comes with all the mounting hardware were other products I had ordered did not. Order was received in timely manner and well packaged.

2017 Nissan Frontier

Looks good insulation was a breeze

2019 Nissan Frontier

Fit perfectly and did away with the need for all of the extra adapters for the different trailers I use.


Great product, easy install


placed order, received timely and installed in about an hour. VERY HAPPY!

2011 Nissan Frontier

Product arrived just on time for me to install on my truck which didn't have a trailer hitch receiver. I was in desperate need of one since was planning on using it for a new driver for deliveries for the weekend. It was easy to install on my own with 2 jack stands to hold it in place under my frame. It was also easy to install the wires with the built on addon on the receiver so i would avoid to drill my truck. Definelty helped alot


Fits easily. Connections were all good amd fitted to the OEM connectors easy. Bracket material is a bit thin

2015 Nissan Frontier

Good Price and communication. Shipped q uickly

2016 Nissan Frontier

an improvement over the Nissan OEM

2012 Nissan Frontier

Everything came packaged just as described. I bit funky to install the nuts and washers due to a lack of access in the factory bumper, but all in all it got mounted and works perfectly.

Show More Reviews

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

  • How to Install the Hopkins HM43534 7 Way Adapter On a 2014 Nissan Frontier
    The Hopkins Plug-In Simple Vehicle Wiring Harness for Factory Tow Package - 7-Way and 4-Flat Connectors # HM43534 is actually a plug and play option for your 2014 Nissan Frontier. Though this will come with a bracket to attach it to the bottom of the bumper or in some other way, you may be able to mount it in the hole you already have in said bumper. The holes will measure 2-1/2 inches from center to center when going across horizontally, so if this matches the mounting holes you already...
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  • Does Hopkins 7-way and 4-way Connector HM43534 Fit 2019 Nissan Frontier W/ Factory 7-way Connector?
    The Hopkins Plug-In Simple Vehicle Wiring Harness for Factory Tow Package - 7-Way and 4-Flat Connectors # HM43534 you were looking at for your 2019 Nissan Frontier SV is an exact replacement for the factory 7-way you have installed, and will give you both a 7-way and 4-way connector.
    view full answer...
  • Solution for Needing Just Harness of Hopkins 7-Way # HM43534
    Just the round connector with the two harnesses coming out of it from the # HM43534 is not available. If you needed just that portion you'd still have to order the entire 7-way kit.
    view full answer...
  • Troubleshooting Running Lights Not Working On 2019 Nissan Frontier With Hopkins Wiring Harness
    There isn't much to the # HM43534 so I would check out the vehicle wiring. You could start by checking the Hopkins wiring right after the vehicle connector, or test the connector and wire on the vehicle side. More than likely you don't have any power coming from the factory wiring. Assuming that is the case, I would check the fuses. If a fuse isn't blown then it is likely a short in the wiring which you can attempt to find and repair or take it to a local repair shop.
    view full answer...
  • Can HM43534 Wiring Harness For 2016 Nissan Frontier
    There is not a kit to move the Hopkins Plug-In Simple Vehicle Wiring Harness for Factory Tow Package - 7-Way and 4-Flat Connectors # HM43534 next to the license plate on your 2016 Nissan Frontier. Like you said you'd have to drill into the bumper in order to do this and route the wiring there, but there is not a kit.
    view full answer...
  • Finding Running Light Relay for 2021 Nissan Frontier
    The relay of the running light circuit on your 2021 Nissan Frontier is in the relay harness behind the passenger floor board kick panel. If you check out the install video I attached the first thing shown is how to access this area. Sometimes it can be behind lower dash panel to the left of steering wheel as well.
    view full answer...
  • Does Hopkins 7-Way/4-Way HM43534 Fit 2012 Nissan Frontier 4-X
    Yes, the Hopkins 7-way kit part # HM43534 that you referenced is a confirmed fit for your 2012 Nissan Frontier Pro 4-X.
    view full answer...
  • Hopkins Vehicle Wiring Harness For a 2019 Nissan Frontier
    On your 2019 Nissan Frontier that came with the factory harness, you will only need to plug in the Hopkins Plug-In Simple Vehicle Wiring Harness # HM43534 once. Then when you need to use the towing connections you will just plug into either the 4-way flat or 7-way blade connectors. Some Dielectric Grease # 11755 is recommend on the connectors to protect against corrosion and other wiring issues.
    view full answer...
  • Vehicle Wiring Harness For 2019 Nissan Pathfinder With Factory Tow Package
    The Connectors on the Hopkins Plug-In Simple Vehicle Wiring Harness # HM43534 do appear to be similar but they do have small differences. So this connector will not properly fit your 2019 Nissan Pathfinder. The T-One Vehicle Wiring Harness for Factory Tow Package # 118273 is the correct kit needed for your Pathfinder. The jumper harness and relays that are included are necessary for the 7-way to function properly. The jumper harness is what will send power from the vehicles wiring to...
    view full answer...
  • Trailer Wiring Harness For A 2022 Nissan Frontier
    Though The Hopkins Plug-In Simple Vehicle Wiring Harness # HM43534 is not confirmed to fit your 2022 Nissan Frontier we do have an option that will work for you. The T-One Vehicle Wiring Harness with 7-Way Trailer Connector # 118282. This harness quickly installs into your Nissan Frontier's custom wiring harness. The T-Connector plugs directly into existing wiring. This kit includes the required relays to activate the functions needed. I attached a review video link below.
    view full answer...
  • Selecting The Correct 7-Way Wiring Harness For a 2016 Nissan Frontier
    The Hopkins Plug-In Simple Vehicle Wiring Harness # HM43534 is designed to fit a 2016 Nissan Frontier which came from the factory with a 7-way connector on the vehicle. If your Frontier did not come from the factory with a 7-way you will need the T-One Vehicle Wiring Harness with 7-Way Trailer Connector # 118266. This harness includes the relay wiring needed to activate the wiring for the 7-way on your Frontier.
    view full answer...
  • Recommended Trailer Wiring Harness 2019 Nissan Frontier
    Thanks for being a returning customer. The Hopkins Plug-In Simple Vehicle Wiring Harness for Factory Tow Package - 7-Way and 4-Flat Connectors # HM43534 will require additional parts for compatibility with your 2019 Nissan Frontier. Because of this I recommend the T-One Vehicle Wiring Harness with 7-Way Trailer Connector # 118266 which will give you all the parts you need and then if you want to change out the 7-way for a 7-way with 4-way connector you can use the Hopkins Endurance...
    view full answer...
  • Availability of Nissan Tow Package Relays
    We have the Nissan relay kit part # C57000 which comes with two blue relays and a brown relay. There isn't a version of trailer wiring for your 2013 Nissan Frontier that has both the 7-way and the 4-way.
    view full answer...
  • Selecting The Correct 7-Way Wiring Harness For a 2016 Nissan Frontier PRO-4x
    The Hopkins Plug-In Simple Vehicle Wiring Harness # HM43534 is a replacement for the factory 7-way that comes with the tow package on a 2016 Nissan Frontier. If your Frontier PRO-4x did not come with the factory 7-way you will want the Curt T-Connector Vehicle Wiring Harness # C56226 that includes the necessary relays and jumper harness for the passenger kick panel. I have linked our installation video below that shows the installation process including the relays.
    view full answer...
  • 7-Way For 2021 Nissan Frontier Without Factory Tow Package
    We do have an option for you as the Hopkins # HM43534 is only for the factory tow package. So because your 2021 Nissan Frontier does not have the factory tow package, you'll need a wiring kit that includes the relay jumper harness which connects to a 12-pin plug that is behind the kick panel on the passenger’s side in the cab. The correct part to add a 7-way is the following: - Curt T-Connector Vehicle Wiring Harness # C56226 The relays and jumper harness of the # C56226 are not available...
    view full answer...
  • What is Difference Between Curt 7-Way C56226 and Hopkins HM43534 for 2012 Nissan Frontier
    The Curt 7-way kit part # C56226 that fits your 2012 Nissan Frontier that includes relays and harnesses is for the version of the vehicle that don't have the factory tow package and the Hopkins # HM43534 is for the versions of the vehicle that do have it. The Hopkins also has a 4-way on the side of the 7-way so it covers both standard wiring configurations. Basically the tow package means the vehicle already has the relays and harness.
    view full answer...
  • 7-Way Trailer Connector Compatible With Trailer Surge Coupler for 2015 Nissan Frontier
    It sure will! The # HM43534 is a replacement for the factory provided 7-way. If your truck is a US market vehicle that didn't come with the factory 7-way, you'll need to use # 118266 which includes the necessary relays to activate the tow package. If you have a Canadian market truck, use # 118281 Assuming your trailer has an electric lockout on the surge coupler that prevents the brakes from actuating when the truck is placed in reverse, any of the options mentioned above would work for...
    view full answer...
  • Parts Needed to Install 4-Way and 7-Way on 2010 Nissan Pathfinder
    You'll need to start with the 7-way kit part # 118281 on your 2010 Nissan Pathfinder but then would need to just swap out the 7-way with the part # 30955 and you'd have both styles of connectors.
    view full answer...
  • 7-Way Vehicle Wiring Harness For a 2016 Nissan Frontier That Did Not Include Factory Tow Package
    Since you need the relays for your 2016 Nissan Frontier that did not come with the factory tow package you will need the Curt T-Connector Vehicle Wiring Harness # C56226 that includes the relays and jumper harness. The Hopkins Plug-In Simple Vehicle Wiring Harness # HM43534 is a replacement for vehicles that came with a factory 7-way connector and do not need the jumper and relays.
    view full answer...
  • Does etrailer Hitch for 2018 Nissan Frontier have Bracket for Wiring
    Since the etrailer hitch part # e98869 that fits your 2018 Nissan Frontier doesn't have a trailer wiring bracket attached to it the best option would be to mount the 7-way kit part # HM43534 to the lower edge of the rear bumper which would require drilling. Another option is the Draw Tite hitch part # 75282 that fits your truck which does have a bracket welded to it that you could attach the # HM43534 to. This might be your best option.
    view full answer...
  • Trailer Wiring For A 2022 Nissan Frontier
    Although The Hopkins Plug-In Simple Vehicle Wiring Harness # HM43534 is not confirmed to fit your 2022 Nissan Frontier we do have the parts you will need! The Curt Vehicle Wiring Harness # C56225 will give you a 4 flat connector and will plug into your vehicle's wiring harness which is located beneath the rear of the vehicle, along the driver's-side frame rail. After the 4-flat connector is installed you will need The Curt Trailer Connector Adapter with Backup Alarm # C57102 will attach...
    view full answer...
  • How To Get Both A 7-Way And 4-Pin Connector On A 2011 Nissan Frontier
    You are definitely on the right track. It sounds like you did install a wiring harness and relays like part # C56225. If those relays have been installed all you would need is the part # HM43534 that you referenced. This will plug right in and give you both a 7-way and 4- pin connector. For operating electric brakes you will also need a brake controller. I recommend the Tekonsha prodigy P3 part # 90195. This is a great all around controller and gives you pully proportional braking. Large...
    view full answer...
  • Trailer Lights Do Not Work With 2012 Nissan Frontier
    Since some of the lights on your trailer are not working with your 2012 Nissan Frontier, the first thing to do is take a look at your owner's manual to locate any trailer fuses or relays and ensure they are all there and in working order. If they are, in order to determine the specific problem you will need to purchase a circuit tester if you do not have one - the very handy Cordless Circuit Tester # PTW2979 is my recommendation due to how easy it is to use - and test the connector on your...
    view full answer...
  • Trailer Wiring Harness for a 2011 Land Rover Range Rover Sport HSE
    The Hopkins wiring harness you looked at, part # HM43534, actually fits some Nissan vehicles that have the factory tow package. If your 2011 Land Rover Range Rover Sport didn't come with any factory trailer wiring you need a universal harness like part # 119147KIT. Then you can convert that 4-way to a 7-way using our # ETBC7L kit. This kit is designed to work with the Curt Echo brake controller, part # C51180, because it doesn't need the additional wire ran to the Rover's cab. The install...
    view full answer...

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Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Jameson C
Expert Research:
Jameson C
Employee Lindsey S
Edited by:
Lindsey S
Employee Kathleen M
Installed by:
Kathleen M
Employee Michael B
Installed by:
Michael B
Employee Wilson B
Updated by:
Wilson B
Employee Alexander C
Written by:
Alexander C

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