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Factory Style 7-Way and 4-Way Flat Vehicle End Trailer Connector

Factory Style 7-Way and 4-Way Flat Vehicle End Trailer Connector

Item # N40975
Our Price: $86.83
Custom Fit Vehicle Wiring

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Shipping Weight: 1.14 lbs
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  • Reviews (137)
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  • Videos (6)
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Hopkins Custom Fit Vehicle Wiring - N40975

  • Custom Fit
  • Trailer Hitch Wiring
  • 7 Round - Blade
  • 4 Flat
  • No Converter
  • Hopkins


Factory Style 7-Way and 4-Way Flat Vehicle End Trailer Connector

  • Plugs into the vehicle's factory plug behind the bumper and provides a 7-way and 4-way trailer connector hook-up
    • Includes the 3 relays required to activate the wiring harness
      • 2004-05 Nissan Titans only require 2 relays
  • Mounting bracket and installation screws included
    • Trailer connectors and mount bracket snap together



40975 + C57000 Factory Style 7-Way and 4-Way Flat Vehicle End Trailer Connector

Installation Details N40975 Installation instructions

This Product Fits The Following Vehicles




Video of Factory Style 7-Way and 4-Way Flat Vehicle End Trailer Connector

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




Video Transcript for Hopkins Trailer Wiring Harness Installation - 2023 Nissan Titan N40975

Hey, guys. It's Jake here with etrailer. Today, we're gonna be taking a look at the Hopkins 7 and 4-pole trailer connector. Today, we have a 2023 Nissan Titan, and this vehicle's actually equipped with the factory US car connector. It is tucked up right behind this bumper. If you reach back up in there, you can see it.

You can find it. And if you look right under here, you'll see I've got it pulled out. This is what is designed to connect to the 4 and 7-way plug. Now, there's two ways that you can connect this. One way is with the bracket that comes with the kit.

It'll just install like this, and you can, it clips into place and you can mount it up underneath your bumper like so if you want your connector to be down by your hitch. The Nissan Titan is actually equipped with this same shaped hole right behind this plastic bumper. We'll show you a quick clip of it back here, but if I feel up behind there, I can feel the exact indentation of this hole, which this plug is designed to fit. So, I would highly recommend and definitely what I would do is just trim that out from the back side, and then you can take this plug, connect it right into place and then plug your US car connector that comes from the factory directly into the back of it. Otherwise, if you don't and you want to use this bracket to mount it down here for a less invasive installation, you will have to get an extender or extend your wires on your US car connector 'cause we tried it a couple of different ways, and it will not mount very easily down here.

So, again, it's a cleaner installation if you install it up here and it'll give it a much more factory look. Most vehicles come with them up there. That's probably why that plug is back there, but it's really up to you however you want to install. Now, you can see this bracket back here. It is kind of coincides with the license plate bracket, but you can see the fitment is the same as that bracket that comes with our 7 and 4-pole.

It's much easier just to cut this out, cut the plastic out from this backside and then insert your plug from the front and you should be all good to go. You can see here what we're talking about. This plug is not quite long enough to reach out and to plug into the connector up under the bumper, but right here, it would fit perfect. Now, there's gonna be two different ways you can get this kit. You can get it with just the plug and the bracket, which is what we would need for this vehicle. If your vehicle does not have the factory relays, you will need to get the plug, the bracket and the three relays in order to get the 7-pole functions back to the back of the vehicle. We'll show you which relays they are so you can check whether or not you have the correct relays. The relays we're looking for are going to be your trailer tow, your trailer turn left hand, and your trailer turn right hand. That is going to be this brown fuse, this blue fuse and this blue fuse. As you can see, in the kit, we get a brown fuse and two blue fuses. But for our vehicle, we already have those. If you pop the hood of your vehicle, look in this panel, it's right next to the battery. Pop this lid off. If you have those three relays, just pick up the 7 and 4-pole plug and you're good to go. Plug it in and you can start towing a trailer. Well guys, hopefully this video helped you decide whether or not the Hopkins 7 and 4-pole connector is right for you and which kit is right for your 2023 Nissan Titan.

Customer Satisfaction Score:


Customer Reviews

Factory Style 7-Way and 4-Way Flat Vehicle End Trailer Connector - N40975

Average Customer Rating:  4.9 out of 5 stars   (137 Customer Reviews)


by:
2005 Nissan Titan

Product worked great had no power to the left turn signal after doing some research online found [online] video where there’s two hidden fuses near the steering column wiring harness and one head blown due to prior towing…. Supposedly only applies to 2004 2005 Nissan titans 2006 and later according to forums Nissan fixed it and put additional fuses and relays in the fuse block under the hood



by:
Nissan

Although I have not installed it yet, it looks to be of good quality. As far as I can tell i think I will be able to mount it in the factory oem location in the bumper. Nissan doesn't sell the trailer plug separately from the factory hitch so this saved me lots of cash.

Mike M.

6/13/2018

After having it on the truck for a year, its still working great. No issues.



by:

Amazing wiring harness! Use my 6x12 utility trailer weekly, no problems at all. Installed in about 10 minutes. Will buy again!

Chris

1/3/2019

1 year and still works amazing! Highly recommend this product!



by:
2008 Nissan Titan

Worked out great, plugged in to existing factory wiring. Quality product.easy to install.



by:

Excellent customer service. Quick shipping. Easy installation. The video was clear and helpful. Could not ask for more from etrailer. Will order from them again.



by:

Easy to install, fits as it should, works nice with both connectors.

Andrew

12/21/2022

Nice setup, everything worked well, easy install.



by:

This plug was very easy to install. I was able to use the cutout in my bumper to install the plug and the harness on my truck plugged right into it. I didn't have to use the bracket that came with it. The relays were simple to install.
This is an awesome product.



by:
Honda Pilot

The product was everything I needed minus an extra blue relay which I did not realize needed to be ordered additionally. I should have read the comments section of others who had ordered this and would have known ahead of time. I ordered the extra blue relay and once it arrives everything will be complete.

The installation was straight forward. Drilled some pilot holes for the bracket unto the bottom of the hitch cross bar. Used the supplied self tapping screws to mount the plate. Popped in the 7/4-Way Flat Vehicle End Trailer Connector, plugged the factory installed trailering plug into this, and the relays under the hood fuse box (marked by factory) and all worked perfectly. Need the extra blue relay for the under dash trailer wiring connection for driving lights to work on trailer. It is to the left of the steering column, mounted on a metal support bracket behind the plastic knee protector area. This same area is where you would plug in the e-brake connection if you wanted to add that.

Hope this helps.

Al C.

9/6/2017

Still working great.



by:

‘‘Tis was the easiest diy I have ever done. Everything fit perfectly and worked like it’s supposed to. No troubleshooting needed. I use it regularly and have had no problems.



by:
2017 Nissan Titan

It is just exactly what I needed. Ordered on Tuesday 07-25-23 and it was delivered 07-27-23. Very satisfied with the product and service.
Thanks



by:
2013 Honda Pilot

Bought this hitch and the 7/4 way plug and relay kit for my daughter's Titan as a Christmas present. She was excited and wanted to install it herself. The products are great quality and the videos extremely helpful. I had her watch the videos, got out the 1/2 impact and cordless drill and turned her loose. With minor supervision and help she had it all installed in less than 45 minutes. The hitch bolted right on with the bolts provided. We did drill some pilot holes for the 2 self tapping screws provided for the 7/4 way plug bracket only because I was afraid we might dull one before it cut through. For anyone with a general knowledge of tools and their uses this project is a snap. I highly recommend these products.



by:
Saturn Relay

received the connector and relays the relays installed very easy in the relay box located in the engine compartment, how ever the 7 way - 4 Way connector and bracket that the site recommends and shows an install did not work as the OEM connector that is located in the rear on the passenger side of the bed even cutting the connector wiring loose as recommended did not have enough length of wire to reach the installed bracket. I did notice that the Bumper from the rear has a cutout for this connector, but the plastic over cover on the bumper covers this cut out so I cut out the area using the bumper metal cutout as a guide then the connector snapped into the cutout and then the OEM Harness reach the connector with no problem, looks like it was Factory installed.



by:
2010 Nissan Titan

Quick and easy install.
Fast shipping
and great communication



by:
2004 Nissan Titan

This Kit worked perfect for my 2004 Nissan Titan XE. Easy install, it attaches right to the factory harness. My truck only requires 2 of the relays because its a 2004. One blue and one brown.......
A note for anybody trouble shooting any power issues {blinkers or lights on trailer not working} there are 2 hidden fuses that were installed on most first generation Titans as a dealer recall. They are located in the wire harness bundle underneath the steering wheel. If either one of these are blown, you will need to replace for the trailer harness will work. Hope that helps.

I would definitely recommend this product !!!!!!



by:

The product is great just as it is advertised. But the really wonderful part is Dana M.I knew what I wanted but the part number was a old one not in the system. She found what I needed,she is an asset to etrailer.com..Thanks

John O.

6/22/2014

It is working as advertised



by:
2010 Nissan Titan

Easy to install on my 2010 Nissan Titan. All I had to do was plug it into the factory wiring. The only problem I ran into was there is a third relay that needs to be installed for this to work properly. Without it all of the trailer lights worked except for the running lights. I took my truck into a Nissan dealer and they added the relay, somewhere under the dash.



by:

Simple easy to use



by:
2010 Nissan Titan

Ordered for new hitch install on '06 Titan. Put the hitch on first then realized I could have installed the plug mounting plate on the hitch bracket first and would have been easier. Regardless, still installed in about 10 minutes so no complaints. Fit perfectly and looks good too. Nice quality plug. Overall, very satisfied with purchase.



by:
2008 Nissan Armada

Great product. It is exactly what I was looking for and it was Shipped quickly. 2008 Nissan Armada



by:
2006 Nissan Armada

Bought this for my 2006 Armada. Direct connection, no fuss. Worked absolutely perfectly for my non-factory tow package SUV.

Installed the plate onto my bumper with the provided sheet metal screws. Required a hole to be pre-drilled, which is super easy.



by:

Perfect fit



by:
2015 Nissan Titan

The product matched up mounting holes to the hitch I got so I was able to use some bolts and nuts I had to mount it to a plate in the new hitch. The factory 7 pin harness on my Titan plugged directly into the unit and it worked perfectly. Took about 5 minutes to install. Simple and easy.



by:
2013 Nissan Armada

Wow!!! From the time I opened the package to the time I was ready to hook up to the trailer was 13 minutes!!!! My '07 Armada needed the extra blue relay under the dash, but thanks to your forums and customer reviews I was prepared for that by the time the package arrived. I ordered on a Sunday night and even with a blizzard hitting your area of the US hard, I still had my parts by that following Friday morning!!! Bravo to all who put customer service #1that is something that seems to have been forgotten by many companies but obviously not etrailer.coms!!! Thank you for providing exactly the product that was described, and the service that you promised!!!! Sincerely, Jason, Missie, and Family



by:

The products were quickly delivered and the order was fulfilled to my expectations. The products worked well with my new trailer break installation in real-time in highway conditions. I would recommend these to anyone.



by:
2017 Nissan Titan

The product is excellent quality and functions as it should but I purchased it based on etrailers recommendation. The video etrailer shows is a little deceiving. The hitch, which I bought from etrailer as well, is not the same as the one in the video and the long mounting bracket only fits in one spot because the factory harness has so little slack in it. Don’t get me wrong, it works great but looks a little silly because it’s pointing away from the hitch.


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Show More Reviews

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

  • Troubleshooting Trailer Wiring Where Running Lights Come On Disconnected in Storage
    You must have a short between the running light circuit of the trailer and the 12 volt battery charge line which is causing the running lights to illuminate. First place to check is the trailer connector that connects to the tow vehicle. Corrosion on the pins or the wiring behind the connector can cause a short. Since it developed over time that's what I believe is going on. I attached a couple help articles on trailer wiring for you to check out as well.
    view full answer...
    Image 1 for
  • Correct Mounting Orientation for Tekonsha 90195 P3 Brake Controller on 2008 Nissan Titan
    As long as the controller is oriented so it's flat in the side to side horizontal plane and pointed in the direction of travel, it doesn't matter what angle the # 90195 Tekonsha P3 is installed at, as shown in the diagram I provided. In addition to the brake controller, you'll also need the # 3050-P wiring harness (assuming the vehicle has the factory 7-way trailer connector). If you don't have the trailer connector, you'll also need the # N40975 which includes the necessary relays to...
    view full answer...
    Image 1 for
  • Are Tow Package Relays Available for a 2009 Nissan Titan
    Yes, we do have the relays by themselves. They are part # C57000. We also have a video which I have linked showing installation on a 2008 Nissan Armada and another video showing installation on a 2006 model. Installation will be similar on your 2009 Nissan Titan. Consult the vehicle owners manual for the proper location of the relays on your truck.
    view full answer...
  • Relay Recommendation for a Nissan Pathfinder
    It sounds like you need to install a few relays to complete your trailer wiring harness. For just the relays you would want the Curt Relay Kit # C57000. I attached an installation video that shows where these are installed for you to check out also.
    view full answer...
  • Need Replacement 7-way Harness and Bracket For 2010 Nissan Titan
    For a replacement harness with a 7 and 4-Way connector and bracket, you will need the OEM Style 7-Way and 4-Way Trailer Connector, part # HM40975. Only the bracket and the 7-way/ 4-pole connector is included. The existing wiring harness will plug into the rear of the # HM40975.
    view full answer...
  • Trailer Hitch and Wiring Harness for 2012 Nissan Armada Without Factory Tow Package
    The most popular 2-inch Class III hitch for your 2012 Armada is the Curt # 13188; this is also the most cost-effective hitch offered. Along with this hitch (or your existing one if you already have one) you can use the Hopkins Custom Fit Vehicle Wiring for the 2012 Armada by Nissan, part # N40975 that you referenced. This includes the relays required to activate the tow package wiring. I have linked you to an installation video for this kit in an Armada.
    view full answer...
  • Troubleshooting Vehicle And Trailer Wiring When Tail Lights Do Not Work
    Many times the problem with trailer lights not working is the ground. You want to make sure the ground wire for the vehicle and the trailer are secured to a clean, bare metal surface. You want to make sure all of the lights on the trailer are properly grounded as well. You will want to check all of the pins on the vehicle with a circuit tester like part # PTW2993. Have someone run through the functions while you check each pin. If everything checks out okay on the vehicle you can then...
    view full answer...
  • Relay Location for Installing Hopkins 7-Way and 4-Way Vehicle End Trailer Connector Kit # N40975
    If you refer to the linked installation video at the 1:15 minute mark you will see our installer opening the power distribution box in a 2010 Nissan Titan in order to install the tow package relays included in part # N40975. These install on the white connectors. The brown relay installs on the brown connector as shown. These relays along with the 7-way socket included in part # N40975 activate the tow package wiring.
    view full answer...
  • Solution for Installing 7-Way Mounting Bracket to Trailer Hitch on 2017 Nissan Titan
    The Draw-Tite Class III Max Frame Round Tube Receiver Hitch # 76154 referenced in your question is confirmed to fit your 2017 Nissan Titan. As you mentioned this particular model hitch features a mounting bracket on the left side (if you are facing the hitch from the rear of your truck) that allows for easy attachment of a bracket and 7-Way like the Hopkins # HM40975 or # N40975. The bracket is indeed welded to the hitch and cannot be relocated. Since your factory harness/plug is on the...
    view full answer...
  • Trailer Running Lights Not Work with Wiring Harness for a 2010 Nissan Titan
    There are some things you can check to determine what the problem is. First, in the vehicle and trailer side connectors, check for any dirt or corrosion that may be causing a bad connection and clean it out. If the trailer has a lot of lights that use the running light circuit, it could be too much power draw for the system and the wiring on the vehicle is not allowing it to draw power. Use a circuit tester like # 3808 to test the 7-Way without the trailer connected to see if the running...
    view full answer...
  • Trailer Running Lamp Circuit on 2008 Nissan Titan is Dead
    It is possible that a relay was damaged. The blue relays located in the box located between the battery and firewall (see linked video, fast forward to the 5:00 minute mark) help protect the trailer lighting circuits. I'd swap the blue relays back and forth, and see if that fixes the issue. We offer a replacement relay in the Curt Relay Kit # C57000. I'd confirm that you checked the correct fuse. You should be looking at the trailer running lamp fuse, not the one for the truck itself....
    view full answer...
  • Recommended Trailer Hitch and 7-Way Connector for 2017 Nissan Titan w/o Factory Tow Package
    Starting with the trailer hitch, I recommend the Curt Class III Round Tube Receiver # C13304. This Class III hitch is confirmed to fit your 2017 Nissan Titan and will use existing holes in its frame for a no-drill installation. It will provide you with a 2 inch receiver opening and it features an 8,000 pound towing weight capacity. You will also want to check the owner's manual for your Titan to verify its capacity, as you will need to follow whichever limit is lower (the truck's or the...
    view full answer...
  • How To Maintain a Trailer Battery Using A 7-Way Trailer Connector On a 2008 Nissan Pathfinder
    You will not need a fuse to charge your trailer battery while towing. If you are trying to maintain a charge for a trailer battery via the 7-Way, you will want to use the top right pin on the 7-Way (if looking at the front of the vehicle side plug). It is the 12 volt power source. On the trailer side connector, attach the wire coming from the top right pin (if looking at the back of the plug) to the trailer battery positive terminal. Now when the trailer is connected and you are towing,...
    view full answer...
  • Installing Factory Style 7-Way and 4-Way Flat Trailer Connector on 2004 Nissan Pathfinder Armada
    I am sorry you are having trouble with installation of the wiring harness on your Pathfinder Armada. We have a video of the same wiring harness being installed on your vehicle. On the driver side of the vehicle looking up at the backside of the bumper behind the spare tire you will find the round connector that you will use to connect the wiring harness. Remove the cap and then plug the trailer harness into the rear of the trailer connector. Once you have this done you can install the...
    view full answer...
  • Nissan Tow Package Relay Availability
    Yes, you can purchase just the relays that come with the part # N40975. For that you would want part # C57000.
    view full answer...
  • How to Install 7-Way Trailer Connector N40975 On a 2004 Nissan Titan Without Tow Package
    We do carry the wiring harness you need. For a 2004 Nissan Titan that does not have a towing package, you will need the Factory Style 7-Way and 4-Way Flat Vehicle End Trailer Connector, # N40975 that you have referenced. The harness comes with the required relays that activate the wiring harness. On your 2004, you will only need 2 of the relays. To install the harness, you will first need to find the factory connector under the truck, rear of the spare tire. There will be a port to plug...
    view full answer...
  • Parts Needed to Install Trailer Wiring Harness on 2017 Nissan Titan
    I recommend using the Factory Style 7-Way and 4-Way Flat Vehicle End Trailer Connector # N40975, which would give you both a 4 way and 7 way trailer connector and uses the US car connector wiring that is present on all 2017 Nissan Titans. This kit comes with the relays included needed to activate the factory tow package wiring and is a great solution that gives you everything you'd need to tow trailers with either connector. There is not a harness available for only a 4 way, so this would...
    view full answer...
  • Parts Needed for Brake Controller Installation on 2008 Nissan Armada Without Tow Package
    To install a trailer brake controller like the excellent prodigy P2 # 90885 in your 2008 Nissan Armada that does not have the factory tow package you will use a quick-connect harness # 3050-P. This plugs in between the controller and the port under your dash as shown in the linked video. You'll also need 7-way and Relay Kit # N40975 which includes the trailer socket and the three relays that activate your wiring harness. An install video is linked for you.
    view full answer...
  • Troubleshooting Trailer Lights Not Working With 2005 Jeep Grand Cherokee
    You said you have the same problem as a customer had with a Nissan Titan. If you have a wiring harness installed and are having these issues, it sounds like you have a blown fuse or bad relay on your Jeep. I did some research and found that there are 2 relays for your vehicle for trailer towing. They are in position 5 and 6. These would be items you need to get from your dealer if they are missing or bad. The fuse box is located under the left side of the dash behind a panel. The fuses...
    view full answer...
  • Trailer Running Light Relay for 2010 Nissan Titan
    Some Nissan Titans and Armadas use a relay for the trailer running lights that's located under the dash to the left of the steering column. There should be slots for three blue relays, and if you're missing one, as shown in the photo, it would explain why the trailer running lights aren't working. We carry the relay in the Curt Relay Kit # C57000. Most likely yours went bad if your lights were working at one point. You can easily test this by trading one of the other blue relays with the...
    view full answer...
    Image 1 for Image 2 for
  • Troubleshooting Trailer Wiring Running Light Circuit on 2005 Toyota Highlander
    Since you've tested your trailer with a direct 12V power source and confirmed that it is not the problem, I suggest you first focus on the item that is most often the cause for the kind of issue you describe: the trailer wiring harness ground wire. If the ground on the Highlander's wiring harness is not solidly affixed to a clean bare metal surface it may be able to pass enough current for on-and-off signals like brake and turn lights but may not be able to handle the steady current draw...
    view full answer...
  • 4-way Recommendation for Trailer Wiring that Has a 3-Way Installed
    You will need to replace the 3-way connector you have on your trailer with a 4-way. I am not sure why the guy sold you a 3-way as that would be a very non-standard wiring setup. The green wire circuit is most likely your right turn/stop and the brown wire is most likely the running lights. Trying to run both of these circuits on the same wire wouldn't work and is most likely why you don't have running lights anymore. You would want to replace the 3-way with something like the part # HM48110....
    view full answer...
  • What Wiring Adapter Is Needed To Install Tekonsha Prodigy P2 In 2017 Nissan Titan?
    I am not 100% sure what you are referring to in regards to the factory 5 wires, but your 2017 Nissan Titan has a factory trailer brake controller port and will use an adapter to plug in to your Tekonsha Prodigy P2 # 90885. You will need the Plug-In Wiring Adapter # 3050-P to plug into the factory connector underneath the dash. This connector is there whether you have the factory tow package or not, just if you do not have the factory tow package you will also need the # N40975. I included...
    view full answer...
  • Parts Needed to Install a Brake Controller in a 2008 Nissan Armada without 7-Way
    Your 2008 Nissan Armada should have the brake controller install port under the dash. The harness is located underneath the dash, to the left of the steering column, taped to another harness near the emergency brake pedal. You most likely will need to remove the lower dash panel to access it. For the install of the brake controller you will need the install harness part # 3050-P to install our best selling P2 # 90885. For a brake controller I would recommend the Prodigy P2 Brake Controller...
    view full answer...


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