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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
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Custom Fit Vehicle Wiring

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Hopkins No Converter Custom Fit Vehicle Wiring - N40975
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Call 800-298-8924 to order Hopkins custom fit vehicle wiring part number N40975 or order online at etrailer.com. Free expert support on all Hopkins products. Guaranteed Lowest Price and Fastest Shipping for Factory Style 7-Way and 4-Way Flat Vehicle End Trailer Connector. Custom Fit Vehicle Wiring reviews from real customers.
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Hopkins Custom Fit Vehicle Wiring - N40975

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


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 Trailer Wiring Harness Installation - 2017 Nissan Titan

Speaker 1: Today in our 2017 Nissan Titan, we're going to be installing the factory-style seven-way and four-way flat vehicle and trailer connector. Part number N40975.This trailer wiring kit is going to connect directly to our factory harness. It's going to provide a seven-pole connector and a four-pole connector. Both connectors are going to provide you with all the necessary lights that you need for your trailer, including your turn signals, brake, tail lamps. You'll also get reverse lamps and trailer power in your seven pole.The doors are spring loaded with a rubber sealed gasket on the inside to keep out any debris or moisture. Also included in the kit, you get all the necessary relays to plug right into your factory relay box to provide proper operation at your trailer connectors.

There's no cutting, slicing or running any wires on this kit. Everything's plug and play and ready to go.It's extremely easy to install. We'll show you how to do that now.To assist with the insulation, we'll be using long bracket. This will help to get our seven-pole connector out so we can easily attach it. We'll set the bracket in position, run our strap around it, push it back through as far as we can, and then snap down the screw.

Now double check our positioning, make sure we have it where we want it, and tighten it down.We can then trim away any excess. We'll then take the two screws, put them in the appropriate holes for our seven-pole connector bracket. Slide our seven-pole connector bracket into position, and then put the locking nuts on the other side. And then tighten them down with a 10 millimeter socket.Now take your seven-pole connector and slide it in the bracket. We'll then locate our factory seven-pole connector.

Just give it a little twist. It will pop off of its normal mounting location, and to extend the wire out a little bit further to reach our connector, we're going to take some pliers and pop out the clip up there. We can now feed the connector over the hitch, press the release tab on top, and pull out on the plug. And then take some dielectric grease, fill up our terminals here, and that will help keep out any corrosion and moisture.Once it's filled with grease, simply plug it in to your seven-pole connector, and now we're ready to install our relays. We're here under the hood on the passenger side, just behind the battery.

We'll open the cover to our relay box and we'll install both of the blue relays, and the open white connectors here, and the brown relay, and the open brown connector there. Start with our brown relay. Just push it on. Make sure it's in snug, and do the same with the two other relays. Now you can put your cover back on.We'll now plug in our trailer or tester, check for proper operation. Here we have our left turn, right turn, brake lamps, and tail lamps. You can also see in the top right gauge that our trailer's receiving it's 12-volt power. And now with everything working properly, we're ready to hit the road.And that completes our installation of the factory-style seven-way and four-way flat vehicle and trailer connector on our 2017 Nissan Titan.


Customer Reviews

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

Average Customer Rating:  4.9 out of 5 stars   (99 Customer Reviews)


- N40975
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. 195060



- N40975
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. 600148



- N40975
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. 331124



- N40975
by:

Has held up wonderfully and looks great. 727144



- N40975
by:
Nissan Titan

Easy to install (with a little help lifting from my son). This is my second Titan, and I was concerned about the ride quality (road vibration). In addition to being a quality hitch, it also supports the rear frame. Noticeable improvement in ride quality. Very pleased with this purchase. 716357



- N40975
by:
2017 Nissan Titan

Fit and finish perfect, looks like factory. Would definitely purchase again from etrailer.com 696922



- N40975
by:

Simple easy to use 693209



- N40975
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. 689968



- N40975
by:

Super easy install. I actually mounted in the factory location... took a dremmel and cut the plastic in the bumper out and it snapped right in. Easy peasy! 668846



- N40975
by:
2015 Honda Pilot

Pretty easy install. Took me about 15 minutes with the right tools. All you need is a drill, small bit for pilot holes, 1/2" socket and adapter for the drill. Plug and play is always nice. Cant wait to see how it works when I hook a trailer up! 657787



- N40975
by:

Works great. I highly recommend an extension since my Titans factory 7 way was a solid 10”-12” short of where the one I ordered mounted. Fast shipping. Happy with my purchase. 641724



- N40975
by:

Easy install, easy use. 635604



- N40975
by:
2017 Nissan Titan

Great product at a great price. With their tutorial Video installation was simple. Looks great 598347



- N40975
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. 575455



- N40975
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. 570972



- N40975
by:

Everything went well, I am pleased with the results. 567728



- N40975
by:
2017 Nissan Titan

Works great easy install! Didn't need the relays though. 2017 Titan XD S 553452



- N40975
by:

Product fit like a glove 30 min install. 7/4 pin plug assembly fit perfect to factory setup 545843



- N40975
by:

Good quality product, super simple to i nstall. 529728



- N40975
by:
2005 Nissan Titan

Easy to put on and works great 520145



- N40975
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. 519544



- N40975
by:
2010 Nissan Titan

Great product, easy to install using instructions included with unit, price could have been a bit more competitive but otherwise very satisfied whit product. I would recommend this product and seller to my friends. 502672



- N40975
by:
2017 Nissan Titan

Works perfect for 2017 Titan! 500605



- N40975
by:

Perfect fit! Fast shipping and a great price!! 470151



- N40975
by:

Amazing wiring harness! Use my 6x12 utility trailer weekly, no problems at all. Installed in about 10 minutes. Will buy again! 464478


Comments
1 year and still works amazing! Highly recommend this product!
Chris - 01/03/2019

48201
25
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Ask the Experts about this Hopkins Custom Fit Vehicle Wiring

  • Trailer Hitch Receiver and Wiring Harness for a 2017 Nissan Titan with No Tow Package
    Even though your 2017 Nissan Titan doesn't have the tow package it should still have the standard round connector to install trailer wiring behind the rear bumper. Part # N40975 includes the 7-way and 4-way connector that plugs right into your truck, as well as the relays to installto activate the wiring. I've linked a video that shows the install on a 2010 Titan for you. The process is the same. With a trailer that large it's likely to hve brakes so you need a brake controller. ...
    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...
    view full answer...
  • Finding Relay in 2004 Nissan Titan that Controls Trailer Running Lights
    On your 2004 Nissan Titan the relay that controls the trailer running light circuit is located behind a panel on your dash board just to the left of the steering wheel. The part # 38666-1 is what you'd need to fit this. I attached a picture of where you'll find the relay location as well. If your running light isn't working currently there will be an empty slot when you check this on your vehicle.
    view full answer...
  • How to Activate Nissan Titan 7 Way Wiring Harness Using Factory 7 Way Kit # N40975
    The # N40975 Trailer Wiring Kit will include detailed instructions on how to install this part and the associated relays. There is a relay panel under the hood, in the engine bay, by the battery on the passenger side. If you remove the cover you will see some open ports. Trailer Tow 1 is where the blue relay goes and Trailer Tow 2 is where the brown relay goes. I have included a video showing the installation of this harness below. Most likely, your current harness is missing the...
    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...
  • Installing Trailer Connector on 2013 Nissan Armada without Factory Tow Package
    You are correct you will need an additional relay since your vehicle did not come with a factory tow package. To install a trailer connector on your 2013 Nissan Armada, you will want the Hopkins Factory Style 7-Way and 4-Way Flat Vehicle End Trailer Connector # N40975 that includes a trailer connector and 3 relays, and an additional relay # 38666-1 to install under the dash and complete the trailer light circuit. The # N40975 and # 38666-1 will be all you need to set your Armada up to connect...
    view full answer...
  • Troubleshooting Trailer Turn and Brake Lights Not Working with 2017 Nissan Titan
    If the trailer turn/brake signals aren't working with the Hopkins 7-Way on your 2017 Nissan Titan then most likely you are just missing a couple of relays. If your Titan isn't equipped with the factory tow package we recommend the Hopkins # N40975 that includes the relays but they can also be obtained separately with part # C57000. The two small blue relays are needed to activate the turn/brake signals. I have attached the installation instructions and a video that specify where they...
    view full answer...
  • Parts Needed to Install Brake Controller in 2017 Nissan Titan without Tow Package
    There are three things you'll need to install a brake controller in your 2017 Nissan Titan without the factory tow package. You'll need a brake controller, the install harness, and a 7-way part # N40975 and you'll be set. The # N40975 comes with the relays needed to activate the 7-way as well. For a brake controller I would recommend the Prodigy P3 Brake Controller part # 90195. This is our best selling brake controller because of how well it works and how easy it is to setup. This is...
    view full answer...
  • Trailer Brake and Running Lights Do Not Work when Connected to a 2004 Nissan Titan
    It is very possible that a relay for the running light tow package wiring is not functioning or is missing. What can happen sometimes is if the relay is not there, only some power can get sent back to the trailer but a full load will not work. This could be why the lights blink when you lock the truck with the key fob but do not work when constant power is applied. The 2004 and 2005 Nissan Titan trucks only require two relays. The relays in questions are included with the Hopkins trailer...
    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...
    view full answer...
  • 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...
  • Troubleshooting Trailer Running Lights Not Active on Nissan Titan
    There is a harness under the dash of your 2012 Nissan Titan that needs a blue relay like part # 38666-1 to activate the running lights. It should be near the emergency brake pedal.
    view full answer...
  • Trailer Running Lights Not Working with 2007 Nissan Armada
    On your 2007 Nissan Armada, you may need an additional blue relay, # 38666-1, in the in-cab fuse panel to make everything fully functional. This will allow the running lights on the trailer to work. The in-cab fuse panel should be located under the dash to the left of a the steering column.
    view full answer...
  • No 12V Power on 7-Way Trailer Connector on 2010 Nissan Titan
    The pin on your Titan's 7-way trailer socket that should carry the 12V power feed for your trailer is the pin located at the 1-o-clock position as you view the socket. Please refer to the linked photo that I have prepared for you. If you have no power on this pin after installing # N40975 you can check the fuse panel in the engine compartment. Look for any fuse locations labeled trailer or tow and install or replace the required fuse value. However, there are some cases where an...
    view full answer...
  • Trailer Turn Signals/Brake Lights Not Working on Trailer Towed by 2004 Nissan Titan
    This does sound like a bad or missing relay. You can test the 7-Way connector without the trailer attached to see if you get any signal at all on the turn signal/brake light circuit. If you do get a signal but the lights are not working on the trailer, it could be that the extra load from the trailer lights is not allowing them to function properly. No signal would indicate a problem further up, most likely a blown fuse or relay. The 2004 Nissan Titan should only need 2 relays out of...
    view full answer...
  • Trailer Running Lights Not Working with 2013 Nissan Frontier
    Trailer running lights not working with certain Nissan vehicles is a common problem with an easy fix. There is a relay for the trailer running light circuit that is located in the fuse box (in the cab). If that relay is missing or no longer functions then it can be replaced with # 38666-1.
    view full answer...
  • No Power to Trailer Wiring Harness # N40975 Installed on a 2011 Nissan Armada
    It is possible that the relays are not in the correct locations for wiring harness # N40975. Consult the owners manual for all of the locations and make sure they are in the right spots. On some Nissan vehicles an additional relay is needed next to the steering column under the dash. It will be a small blue relay. You can obtain the relay from the dealer or use one of the blue ones in kit # C57000.
    view full answer...
  • 2015 Nissan Pathfinder Relay Location
    The towing relays in a 2015 Nissan Pathfinder are located in the rear cargo area on the driver's side. Please refer to the linked video at the 4:00 mark and to the photo that shows this placement. I also linked all of our trailer wiring products for your vehicle, many of which include the three relays which we offer by themselves as part # C57000.
    view full answer...
  • 7-Way Trailer Connector With 12V Battery To Trailer Compatible With 2017 Nissan Armada
    The Factory Style 7-Way and 4-Way Flat Vehicle End Trailer Connector # N40975, will provide the 12V battery to the trailer through the 7-Way connection side only. The connector will work on your 2017 Armada, but you most likely do not need the relays as I believe they come in the more recent models although I can't confirm that. If you want the connector without the relays, I recommend the 7- and 4-Pole Trailer Connector Socket w/ Mounting Bracket - Vehicle End # HM40975
    view full answer...
  • Wire For Left Turn Function Not Receiving Power on 2013 Nissan Armada w/ Factory Wired Trailer Hitch
    On the factory wiring for your 2013 Nissan Armada, it is possible that a relay is missing that is required to power the left turn pin. If you look at your relay panel, which is usually on the passenger side under the hood, near your battery, there should be a map of the different locations and their functions. There will be a position for both trailer turn right hand and trailer turn left hand. If you find that you are missing a relay, you can use part # C57000 which includes the 3...
    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...
  • 2009 Titan Trailer Turn Signals Stopped Working
    Did you install the blue relays under the hood of your 2009 Nissan Titan? The replacement relay is the part # 38666-1. If so, it sounds like you have blown either the trailer turn signal fuses or the relays. Check first to see if the fuses are good, if they are then the problem would be the relays. The easiest way to test relays is to swap in a known working good one. If it's the turn signals of the truck you would also need to check the fuses and relays associated with the turn signals.
    view full answer...
  • Troubleshooting 7-Way Harness Installation On 2007 Nissan Frontier With No Trailer Towing Package
    On some Nissan vehicles there is a relay needed in the in-cab fuse panel to make it fully functional. You will want to check the owners manual to find the locations of all the fuses and relays associated with tow package wiring. Even with all of the relays and fuses in place, you may have a bad one and it will need to be replaced. If you find there is a missing relay then it should be part # 38666-1. If the lights on the trailer are not working, you will want to use a circuit tester...
    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...
  • Availability of Nissan Towing Relays for Towing Circuits on 2008 Nissan Titan Pickup
    The relays in the Hopkins 7-Way and 4-Way Connector, part # N40975, are the relays you will need to activate the towing circuits on your 2008 Nissan Titan. Hopkins doesn't sell the relays separately, but luckily enough Curt Manufacturing does. You can get the relays minus the trailer connector by ordering part # C57000.
    view full answer...
  • 2008 Nissan Titan Trailer Running Light Relay Location
    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 as part # 38666-1.
    view full answer...
  • Trailer Turn Signals and Brake Lights Not Working with a 2005 Nissan Armada
    I tried to find the fuse/relays locations in the 2005 Nissan Armada owner's manual but that information is not present. If you check the lids for the in-cab fuse panel and power distribution box under the hood that should tell you all of the locations related to tow package wiring. Most Nissans need at least 3 relays for the wiring to work: 1 for running lights and 2 for the turn signals/brake lights. It sounds like you need 2 of blue relay # 38666-1 installed under the hood. Take a...
    view full answer...
  • Trailer Running Lights Not Working When Connected to 2008 Nissan Armada with Factory Tow Package
    It is very common for the Armada to lack a relay that allows your trailer's running lights to function. For this you will need the 4 Terminal Relay, # 38666-1. To access the relay connection point in your 2008 Nissan Armada, you will need to remove the kick panel on the driver's side. The location for the relay will be to the left of a the steering column. I have attached a video of the relay being installed on a Titan. Check out the 3 minute mark. The installation process on the Armada...
    view full answer...
  • Trailer Taillight Circuit Not Functioning on 2009 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 as part # 38666-1.
    view full answer...

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