bing tracking image
  1. Accessories and Parts
  2. CURT
  3. Trailer Wiring
  4. Relays
Curt Relay Kit for Nissan Aftermarket Tow Package

Curt Relay Kit for Nissan Aftermarket Tow Package

Item # C57000
Our Price: $31.35
You Save: 40%
Accessories and Parts
Orders above $50 qualify for Free Shipping
Shipping Weight: 0.27 lbs
In Stock
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
This kit includes the 2 small blue relays and 1 large brown relay that are required to complete the circuits for your Nissan's non-factory-installed tow package. 1-636-306-4830 to order CURT accessories and parts part number C57000 or order online at Free expert support on all CURT products. Great prices and Fastest Shipping for Curt Relay Kit for Nissan Aftermarket Tow Package. Accessories and Parts reviews from real customers.
  • All Info
  • Reviews (134)
  • Q & A (0)
  • Videos (5)
  • Photos
  • Why etrailer?

CURT Accessories and Parts - C57000

  • Trailer Wiring
  • Relays
  • CURT

This kit includes the 2 small blue relays and 1 large brown relay that are required to complete the circuits for your Nissan's non-factory-installed tow package.


  • Complete circuits required for towing with a 7-pole trailer connector (sold separately)
    • Large, brown relay activates 12-volt power circuit
    • Small, blue relays activate turn signals
  • Required for Nissan models that do not have factory-installed tow packages

Note: Some Nissan vehicles will require a 3rd blue relay (38666-1).

57000 Curt Relay Kit for Nissan

Installation Details C57000 Installation instructions

Video of Curt Relay Kit for Nissan Aftermarket Tow Package

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

Video Transcript for Curt Wiring C57000 Review

Today we're going to review part number C57000. This is the curt relay kit for Nissan after-market tow packages. This is a custom fit part. This is design to fit the Nissan Armada and Nissan Titan Vehicles starting in 2004's that do not have the factory installed tow packages. Now, these relays can also be used in other Nissan vehicles that might require tow package relays. This kit is used to complete the circuit for towing with a 7-way trailer connector. Basically, this large brown relay right here, is designed to activate the 12-volt power circuit.

These 2 smaller blue relays will activate the right hand and left hand brake and turn signal. These relays are required if your truck does not have 12-volt power or turn signals at the 7-way trailer connector. These relays will fit into the under hood fuse box on your vehicle. When you remove the cover off the panel, you'll notice on the bottom of the cover, it will list the locations and by using these nice directions, it will tell you what locations are used to put these relays into. One other note I do want to mention, is there's some Nissan trucks that might require an additional third small, blue relay just like this. We do sell these individually. It is listed on this product page as a related product.

It's part number 38666-1. These are for the running lights. The third one would be for the running lights. If your truck does not have a signal for the running lights at the 7-way trailer connector, then you'll probably need the additional relay. That should do it for the review on part number C57000, the curt relay kit for Nissan after-market tow packages. .

Customer Satisfaction Score:

Customer Reviews

Curt Relay Kit for Nissan Aftermarket Tow Package - C57000

Average Customer Rating:  4.9 out of 5 stars   (134 Customer Reviews)

This kit includes the 2 small blue relays and 1 large brown relay that are required to complete the circuits for your Nissan's non-factory-installed tow package.


Right part, easy install for my 2017 Nissan Titan, which did not come with the factory trailer relays. Thanks.


the ordering process was as good as the shipping and the product was excellent. I will use etrailer again!


Only reason for a 4 star is these relays should come with the trailer lights plug because you can't buy the relays anywhere else. Easy plug and play , great direction , definitely reccomend

For a 2022 Nissan Titan that does not come with with the tow package we do offer part # N40975
Factory Style 7-Way and 4-Way Flat Vehicle End Trailer Connector
which is the trailer plug with the relays.
-- Etrailer Expert Jenny N - 05/02/2022


Relay fit as it should and allowed for the easy install of trailer brakes


Easy installation. Very solid hitch.


Everything was there and plugged in exactly. Only problem was that it took me a while to figure out that not all the relay go in the fuse box and that there was a separate box for the trailer relays! That wasn’t entirely clear in the instructions but once i found the right box everything was OK.


Excellent customer service, product was shipped and received in a timely manner.
Just wish I had watched there [online} channel before spending $500.00 with another company who clearly didn’t know what to do.


My experience with e-trailer has been nothing but stellar. I have a 2016 Nissan NV2500 van that came with a factory installed hitch and 7 way plus a wireing harness preinstalled by the factory in the cab taped up just behind the e-brake. Plus a Nissan harness in the glove box to be used to marry the brake controller to the harness under the dash. The van salesman said thats all I needed, Great! NOT! I worked for hours trying to get the the trailer with brakes to have all the needed lights too. Nothing worked. The dealer had no idea, forget trying to get hold of Taconsha by phone. I finally called the tech who installed brakes on the trailer and he said be sure to check for relays under the dash or hood because the factory alsways makes mistakes. Sure enough no relays were there to make the trailer brakes and light systems to work! Geez....The dealer wanted believe it or not $175.00 for the four relays! I argued that the van should have had them installed. They did not see it that way and never got back to me with my request to provide them where the van was set up for towing from the factory. So relying on e-traler I found a set of relays advertised for the Nissan Titan but nothing specifically for the Nissan NV van's in the way of relays. They do work perfectly. You'll need product #C57000 relay kit and #38666-1 single relay. And harness #3050 to mate from the socket under the dash to your Taconsha P2 brake controller. Look under your hood for the relay box closest to your battery. You'll see four empty sockets. Place your new relay's in the sockets as indicated under the relay box cover. Not much on the Internet as to how to do this on the Internet so I hope this helps other NV2500 van owners.

Perfect in every way.
Robert - 09/17/2019


Fit exactly like the original


Came sooner than I thought.


the initial trailer wire harness works as described-the contact and information/questions answered promptly--I am happy--as for these relays they were bought as in case of something didn't go as planned and although you said I could return them I kept them. so never used yet--the trailer wire harness was installed on a 2012 Nissan Frontier

as advertised fits well and still workinggood product support when there is any niggles or questions.
Derrick - 03/09/2020


Information in solving a very difficult problem in getting the running and brake likes to work on a Nissan Armada was resolved quickly with good information and advice.

Worked perfectly and directions were easy to follow. Will definitely use in the future as I have in the past.


I've been using my Tekonsha Voyager Trail Brake system for the past year with no problems or concerns. I'm towing a 3100# camper behind my '11 Nissan Pathfinder and the system works great and was easy to install.

I have traded the vehicle that I installed those products on. While I did have those products they work fine, no problems and they performed as advertised.
John P - 04/02/2018


These guys are the real deal! They say what they’ll do, and they do what they say! I have ordered from them a few times with small delicate items as well as a hitch and everything has fit and worked properly as advertised. Definitely my “go to” for parts and accessories.


2009 Nissan Titan


Great quality, took no more than 2 minutes to install, clear instructions. Highly recommend the product and etrailer of course, fast shipping and great attention.

Excellent!!! Rust on the bolts but nothing serious
Gabriel - 06/04/2014


This was exactly what I needed for my 2008 pathfinder SE. had a factory location for the relays just needed these for my trailer brakes to work with the controller.


I purchased a used vehicle, it has a combination 7/4 way connector, but was only wired for the 4 way. I needed the brown relay for the 12v to the 7 way. Purchasing the complete package was cheaper than the single brown relay at other sources. Pure plug and play.


Excellent. Took less than 5 minutes to install. Very simple. Trailer lights working now. This works with a 2006 Nissan Titan without the factory installed tow package. All 3 relays together cost less than 1 relay at other places!

The service at is top-notch. I ordered on Monday and had my package on Wednesday. Prompt, professional, and courteous service. I'd recommend to all of my friends.


Love the service we get from Had trouble with our towing lights and thought we had a towing package on our truck, turned out we didn't. These were just the ticket and worked great. Great customer service and good quality parts. We'll be ordering from etrailer again.


Great company, great service. A few years ago, I bought a used Nissan Titan. My family uses it to pull a boat on a trailer. It was not supplied with the tow package fuses. I was able to easily find what I needed from your website., placed an order, and was pleased with your delivery team. For sure, I will be a return user to your site.

John B


Received the product quickly and plugged them in and they worked perfectly. Would suggest that eTrailer places their shipping information on the site. i.e. If ordered after 3pm it's not processed until the next day and they don't deliver on weekends. I called in after spending 2x as much for shipping as I did for the product, just to learn I couldn't get it any sooner because I ordered after 3pm and it was a Thursday. They did change my shipping option and reduced my cost but I had to call in to get it done. Negated the ease of an online purchase. Overall good service and great product.


These relays are perfect, they fit and function in the factory sockets, and were a snap to plug in. Shipping was also very fast, and I was informed every step of the way. I will be buying more from etrailer.


Although their products did not cause a problem that I was having with turn signals on my trailer they continued to assist me until the solution to the problem was corrected. Finally they sent me a site that had the information that I needed to correct the problem. Lots of time was saved as it would have taken many hours to finally locate the offending item. I am glad that they continued to help me until the solution was found.


Worked great! Can't believe that these were not factory installed on the much hassle trying to figure out the problems with the trailer lights, over nothing!

Show More Reviews

See what our Experts say about this CURT Accessories and Parts

  • Troubleshooting Brake Light/Left Turn Signal on a Trailer Towed by a 2005 Nissan Titan
    The first thing I would test is the trailer connector on your 2005 Nissan Titan using a circuit tester like our part # 3808 to see if the problem lies in the trailer or in your vehicle. Check out the video I attached to see exactly how to do this. Basically, you will be testing for brake/stop light functionality of the circuit and this will tell you if the problem is on the truck or the trailer. If its on the truck I would check the fuses and relays of the tow package and replace as necessary. If...
    view full answer...
  • Will the Curt Relay Kit for Nissan Aftermarket Tow Packages Fit a 2009 Nissan Titan
    Yes, you can use the relay kit, # C57000, on a 2009 Nissan Titan. The relays included are a large brown relay that activates the 12 volt power circuit on the trailer connector, and 2 smaller blue relays that activate the turn signals. Use the owners manual to find the correct locations for the relays. In some cases an additional small relay is required to make everything fully functional. This relay can be obtained by a Nissan dealer. I have included a link to a video showing the installation...
    view full answer...
  • How to Activate the Tow Package Wiring on a 2012 Nissan Titan
    If your 2012 Nissan Titan did not come with the factory tow package, then there will be some additional relays that you will need to install to activate the trailer wiring on your truck. You will need the Curt Relay Kit, # C57000. This kit includes three relays that will need to be installed in the power distribution box under the hood. I have attached an installation video of this relay kit on a 2011 Nissan Titan for you to check out. The installation will be the same as your 2012 Titan.
    view full answer...
  • Troubleshooting No Running Lights on a 2010 Nissan Armada
    The relays you got to activate the tow package wiring of your 2010 Nissan Armada are for the 12-volt power supply and the turn signals. I would check the fuse box of your vehicle and check for towing fuses that could be blown and replace as necessary. The first thing I would check is the trailer wiring running light fuse located in the power distribution box under the hood. Once the fuse box is located check the legend on the lid to determine the correct fuse to check. Blown running light...
    view full answer...
  • Will the Curt Relay Kit # C57000 fit a 2007 Nissan Titan
    Yes, the Curt Relay Kit # C57000 will fit your 2007 Nissan Titan. I attached an install video for this product for you to check out also.
    view full answer...
  • Availability of Relays to Install Trailer Wiring on a 2012 Nissan Titan
    Yes you can use one of the blue relays like the part # 38666-1 in your 2012 Nissan Titan. This will be for the taillight circuit.
    view full answer...
  • Troubleshooting No Stop/Turn Trailer Light Circuits on a 2004 Nissan Titan
    The CURT Relay Kit for Nissan, part # C57000, will have the large, brown relay that will activate the 12-volt power circuit and the two, small blue relays that activate the brake and turn signals. These relays are installed under the hood. We have a video showing the installation of the relays, see link, at about 6 minutes in. Since the running light circuit is active you should not need the large brown relay mentioned in the video. If you check under the hood and the relays are in...
    view full answer...
  • Will Curt Relay Kit for Nissan Aftermarket Tow Package, # C57000 Fit a 2008 Nissan Titan
    Yes, the Curt Relay Kit for Nissan Aftermarket Tow Package, # C57000, was designed for Nissan vehicles that do not have the tow package but add trailer wiring later. They will fit in the specified locations, which can be found in the owners manual for the 2008 Titan, in the power distribution box under the hood. Once installed, all of the trailer wiring functions should work.
    view full answer...
  • Trailer Lights have Stopped Working on a 2004 Nissan Titan with Factory Tow Package
    This sounds like a ground problem. What you can do is start by check the trailer side and vehicle side trailer connectors. You will want to look for any dirt or corrosion in or behind the trailer connectors. Corrosion can cause any number of lighting issues. Next move on to checking the ground connections for each connector to see that they are attached to clean and corrosion free bare metal surfaces. You can then check the tail lights themselves. Again you are looking to see that the...
    view full answer...
  • Towing Package Relay Kit Recommendation for a 2007 Nissan Armada
    The relay kit you would need for your 2007 Nissan Armada would be the Curt Relay Kit for Nissan Aftermarket Tow Package # C57000. Check out the video I attached that shows how these relays install onto a similar vehicle as yours. The relays will install under the hood of your vehicle. However, it is possible that you may also need an additional relay in the in-cab fuse box. This relay can be obtained by a Nissan dealer. But if you install the 3 relays in C57000 and everything works then...
    view full answer...
  • Will the CURT Relay Kit for Nissan Aftermarket Tow Package Fit a 2007 Nissan Armada
    Yes, the large brown and 2 small blue relays, # C57000, will fit the 2007 Nissan Armada to fully activate the trailer connector if the vehicle did not come with the factory tow package. You can use the vehicle owners manual to find the locations of the relays.
    view full answer...
  • Curt Relay Kit Recommendation for a 2006 Nissan Armada
    Yes, once you install this Curt Relay Kit # C57000 on your 2006 Nissan Armada the 12 volt-power circuit will be activated. The brown relay will activate the 12-volt power circuit and the blue ones will activate the turn signals. I attached an installation video for this product for you to check out also.
    view full answer...
  • 2005 Nissan Titan Trailer Running Lights Not Working
    The first thing I would check is the trailer wiring running light fuse located in the power distribution box under the hood. Once the fuse box is located check the legend on the lid to determine the correct fuse to check. Blown running light fuses are a common problem with the Nissan Titan trucks. If the running light fuse is not blown or missing, you should also check fuses in the cab of the truck. Again use the legend on the cover, you will have a fuse box on the passengers side and...
    view full answer...
  • Fuse Box Location for Installation of Curt Relay Kit for Nissans
    The box that has the fuse locations you will need to access is called the power distribution box, it is located behind the battery. Check out the video I attached to see what it looks like. It should be the first relay box behind the battery. I attached a picture of the box in relation to the battery that also has the fuse locations highlighted in yellow. For just the fuses you will want Curt Relay Kit # C57000.
    view full answer...
    Image 1 for
  • No 12 Volt Power to my 7-way Connector on my 2007 Nissan Xterra
    Yuor 2007 Nissan Xterra is set up where your key needs to be in the accessory or run position to activate the 12 Volt power. If you've tested this with the key on and your not getting power then your solution is below. On your 2007 Nissan Pathfinder the Towing Relay 2 fuse is the brown relay, like the one included in kit # C57000. This relay will activate the 12-volt power circuit on the 7-Way connector. This relay is located in a fuse box under the hood, next to the vehicles battery....
    view full answer...
  • Does Curt Relay Kit Work on 2018 Nissan Titan
    Yep, it sure will. The Curt Relay Kit for Nissan Aftermarket Tow Package # C57000 will work on your 2018 Nissan Titan. I have added a link to a video review of this kit for you to check out as well.
    view full answer...
  • Amp Rating for Curt Relay Kit # C57000
    The relays included in the Curt Relay Kit # C57000 that you referenced are all rated for 20 amps. I confirmed this with my contact at Curt. I have attached a short video review that you can check out as well.
    view full answer...
  • 2012 Nissan Pathfinder Brown Relay Install Location for Trailer Wiring
    For the 2012 Pathfinders the relays are located under the hood. There should be a small black box, take the lid off of the box and there should be a legend that will tell you where each of the relays goes. See attached picture.
    view full answer...
    Image 1 for
  • Which Relay on 2017 Nissan Titan Controls 12 Volt Accessory Circuit for 7-Way
    The brown relay is the correct one for activating the 12 volt accessory circuit of a 7-way on your 2017 Nissan Titan. With the part # C57000 you will get this relay as well as two additional blue relays. Most likely replacing the relay is what will fix your issue as the Nissan vehicles are notorious for relay issues but you may also check the condition of all towing related fuses too. I attached an install video for this relay kit on a similar 2014 Titan for you to check out as well.
    view full answer...
  • Troubleshooting 12V Circuit on 7-way Trailer Connector on 2016 Nissan Frontier
    The first thing I'd check is that the brown relay is fully pushed into the socket of the fuse block between the battery and the firewall as shown in the provided photo. If the relay is fully seated, then check the main fuse panel under the hood, the underside of the lid should have a legend on it that lists the fuse locations and what circuits each protects. Look for a location listed as 'trailer tow' or 'trailer 12V', which should be a 20-40 amp fuse. Make sure a fuse is installed in that...
    view full answer...
    Image 1 for
  • Installation of Towing Relays for 2018 Nissan Titan XD
    The factory relays should just pull out of the fuse box, which will allow you to use the # C57000 to replace them with new towing relays. I've linked a review and installation video that shows the process.
    view full answer...
  • Fit/Compatibility of C57000 Relay Kit on 2017 Nissan Frontier Pickup
    We don't sell the white/brown relay by itself, but we do offer all three relays for the running lamp, right turn/brake and left turn/brake lamps as the part # C57000 that you've looked at. These are the correct relays needed to activate the tow package on a 2017 Nissan Frontier that wasn't equipped with the tow package.
    view full answer...
  • Relay Kit to Complete Tow Package Wiring of 2021 Nissan Titan
    Yes the Curt Nissan Relay kit part # C57000 will work as the needed relays for your 2021 Nissan Titan for the tow package wiring.
    view full answer...
  • Relay Kit Needed for Wiring Harness on 2013 Nissan Frontier
    If you are missing the required relays for the wiring harness on your 2013 Nissan Frontier, you will use the Curt Relay Kit # C57000. This will include the 2 blue relays needed to activate the turn signals, and 1 brown relay that activates the 12-volt power circuit. They will fit into the under-hood fuse panel on your vehicle and will work on your 2013 Nissan Frontier. I have included the installation details for you to check out.
    view full answer...

< Previous
123. . .8

Do you have a question about this Accessories and Part?

  • 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 accessories and part 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 Mike L
Expert Research:
Mike L
Employee Robert G
Expert Research:
Robert G
Employee Michael H
Expert Research:
Michael 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 Zack K
Video Edited:
Zack K
Employee Dustin K
Video Edited:
Dustin K
Employee Chris R
Video Edited:
Chris R
Employee Andrew K
Video by:
Andrew K
Employee Lindsey S
Written by:
Lindsey S
Employee Nicholas E
Test Fit:
Nicholas E
Employee Adele M
Updated by:
Adele M
Employee Wilson B
Updated by:
Wilson B
Employee Kristina F
Updated by:
Kristina F
Employee Isabelle B
Updated by:
Isabelle B

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.

Product Experts Available Now!
Call 1-636-306-4830