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Curt Relay Kit for Nissan Armada or Titan Aftermarket Tow Package

Curt Relay Kit for Nissan Armada or Titan Aftermarket Tow Package

Item # C57000
Our Price: $29.90
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Shipping Weight: 0.28 lbs
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This kit includes the 2 small blue relays and 1 large brown relay that are required to complete the circuits for your Nissan Armada or Titan's non-factory-installed tow package. 1-800-940-8924 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 Armada or Titan Aftermarket Tow Package. Accessories and Parts reviews from real customers.
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  • Reviews (148)
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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 Armada or Titan'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 Armada and Titan 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 Armada and Titan

Installation Details C57000 Installation instructions

Video of Curt Relay Kit for Nissan Armada or Titan 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 Armada or Titan Aftermarket Tow Package - C57000

Average Customer Rating:  4.9 out of 5 stars   (148 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 Armada or Titan's non-factory-installed tow package.


Great availability and exactly what I needed. Obviously I'm not the only person with a base model Titan that doesn't have the 3 relays needed to complete the trailer lights circuit. 2017 Nissan Titan. I spent many hours trying to figure out why I had running lights but no signal/brake lights. These are the relays you need.


Good Morning, A trailer hooked up to my 2004 Nissan Titan SE had brake and turn lights but NO running lights... Youtube was no help! But through a mix of ETAILER and a Titan forum I learned my truck did not come with all the relays for trailer lights.. I ordered the relays for ETRAILER. The arrived quickly and the instructions made the job easy. Short story I have trailer running lights now


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

Bobby Q.


After a year, still working good. We took the Pathfinder and the camper for a 450-mile round trip last weekend and it is still working as it should.


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

Etrailer Expert

Jenny N.


For a 2022 Nissan Titan that does not come with with the tow package we do offer part # N40975 which is the trailer plug with the relays.

Hot R.


Product works great


Both blu relays don't seem to plug in all the way. I was missing one blue relay and I took out the one I had and reinstalled it to compare. These blue ones both don't click/lock into place.

Etrailer Expert

Brooke M.


This part is meant for Titans and Armadas which is information that needs to be added to this page, and I will be sending in a note to have that updated. For the Nissan Frontier, you would need part # C56225. It sounds like you already have the seven way, so you would just need the pigtail from part # C56225. It is going to be installed behind the kick panel on the passenger side of your Frontier. Since our page was lacking in important information, I can have our customer service team reach out to you about a return, or if you like, you can save these pieces because they would be able to serve as back ups for the pigtail.


Excellent part, all plug and play on my truck, trailer lights worked perfectly.


Shipped fast thanks


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.


Easy to use and arrived one day early. And all three electrical parts were easy to install .
Our local auto parts store wasn’t able to provide the connectors.


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.


Exactly what I needed to get my running lights working.


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.

John P.


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.


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


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.


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.


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. 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.


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.


The service was outstanding and I was able to install the relays I ordered with no issues. Instructions were simple and it took care of my trailer lights.
Thanks, and I’ll be a returning customer and will refer ETrailet to my friends.


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


This set saved the day on getting my Nissan ready to tow my trailer! The 7 way harness that the dealer sells doesn't let the line to charge the battery work without this!


2009 Nissan Titan


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


Easy ordering, quick delivery.

Show More Reviews

See what our Experts say about this CURT Accessories and Parts

  • Solution for Trailer Running Lights Not Working on 2012 Nissan Frontier with Tow Package
    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 one of the 2 blue relays in the Curt Relay Kit # C57000. The relay of the running light circuit on your 2012 Nissan Frontier is in the relay harness behind the passenger floor board kick panel. If you check out...
    view full answer...
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  • Are the Curt Relays C57000 Needed for a 2017 Titan With OEM Towing Package?
    The Curt Relay Kit for Nissan Aftermarket Tow Package # C57000 will not be needed for your 2017 Nissan Titan since you have the OEM towing package. This is due to you already having these relays pre-installed on your vehicle. With that being said, if your trailer wiring system isn't working, one of these relays may have gone bad. As the # C57000 will replace all 3 of the towing relays, it is highly recommended to replace all 3, just to be completely covered.
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  • After Installing Trailer Wiring Running Lights Do Not Work On 2012 Nissan Xterra
    A common issue with Nissan vehicles is a missing a blue relay in the in-cab fuse panel. If this relay is missing or stopped working, you can replace it with one of the blue relays included in the Curt Relay Kit # C57000 to take care of that. You may want to check the owner's manual for the relay and fuse locations on your 2012 Xterra.
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  • Troubleshooting 2018 Nissan Frontier without Trailer Running Light Circuit Functional
    You do need to install that last blue relay you have. For whatever reason Nissan likes to randomly leave this circuit open and not include the relay to activate the trailer running light circuit. I have attached an image of this relay location along with a helpful installation video that you can check out as well. Please let me know if the issue persists and I will be happy to look into this further.
    view full answer...
    Image 1 for
  • Troublehshooting a 2016 Nissan Frontier That Has Headlights Working Intermittently
    From what you're describing it sounds like there is an issue with your trailer light relay. Since the fuse itself is not blowing It wouldn't lead me to believe that there is a voltage issue so I'd recommend checking that relay. If it turns out that the relay is bad, you'll just want to replace it with the Curt Relay Kit for Nissan Armada or Titan Aftermarket Tow Package # C57000 and you'll be good to go. The fuse box where you will find this relay should be located in the cab under the...
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  • Is Curt Relay Kit for Nissan Aftermarket Tow Package a Fit for a 2017 Nissan Titan
    Yes, the Curt Relay Kit for Nissan Aftermarket Tow Package # C57000 will work with your 2017 Nissan Titan. Please note that some Nissans will need a 3rd blue relay like the one from the # C57000. It's also worth noting that every once in a while, we have someone report back that their vehicle doesn't have metal pins in the locations where these relays install so you'll want to check that out as well to ensure that you're able to install these relays. Attached is an installation video of...
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  • 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...
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    Image 1 for
  • No Running Lights on a 2010 Nissan Frontier
    If you indeed had the factory tow package on your 2010 Nissan Frontier then the trailer wiring relays would be located under the hood in the fuse panel next to the battery. If the relays are located under the drivers side kick panel then your vehicle was not equipped with the factory tow package. There are two blue relay's that will be needed if you are using a 7-way trailer connector but only one blue relay will be needed if you are just using a 4-way trailer connector. If you need any...
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  • Troubleshooting No Turn Signal Wiring on Trailer When Connected to New 2020 Nissan Frontier
    Nissan is notorious for botching up on the wiring front so I definitely get where you're coming from. If the U-Haul trailer has more than one turn signal on the side that wasn't working and it's just one light then it sounds like that light itself either has bad wiring, a bad bulb, or it just needs to be replaced altogether. If there is just one turn signal on that side the above can be true, but your 2020 Nissan Frontier also may need just a new relay for that specific turn signal, which...
    view full answer...
  • Does Nissan Relay Kit C57000 Fit 2017 Nissan Titan
    Yes, the relay kit part # C57000 comes with relays that would work in a 2017 Nissan Titan XD. Nissan hasn't changed their relay design in quite some time now and these carry over for the 2017 model.
    view full answer...
  • Where to Find Trailer Running Light Relay on 2014 Nissan Pathfinder
    The relay of the running light circuit on your Pathfinder 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.The correct fitting relay is the one of the blue relays from the Curt Relay Kit # C57000.
    view full answer...
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  • Finding 2017 Nissan Pathfinder Running Lights Relay
    On many Nissan vehicles like your 2017 Pathfinder, there is a third blue relay that needs to be installed in order for the trailer running light circuit to be activated. The running light relay is located in the relay harness behind the passenger floor board kick panel like what you see in the attached picture. For the needed relay you can use one if the blue relays from the Curt Relay Kit # C57000.
    view full answer...
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  • Where Could Trailer Running Light Relay be for 2014 Nissan Frontier
    On the Nissan vehicles sometimes the running light relay circuit is behind the dash panel to the left of the steering. I'd check there since the relays are good behind the passenger side kick panel.
    view full answer...
  • Where is Trailer Running Light Relay on 2007 Nissan Xterra
    It sounds like your 2007 Nissan Xterra is missing one relay (or it has gone bad), that is traditionally found behind the kick panel like you mentioned. It can be hard to find but I attached a picture that shows where to find it. For a new relay you can use one of the blue relays in the Curt Relay Kit # C57000.
    view full answer...
    Image 1 for
  • Troubleshooting No Trailer Running Lights on Nissan NV 3500
    The trailer running light issue is not a fuse or relay problem. Because the issue is only when the vehicle lights are on, the ground wire connection is the issue. There are 3 places to check to solve this issue. The ground of the trailer wiring on the vehicle side, the main trailer ground connection to the trailer frame, or the tail lights at the mounting location to the trailer. Each of these connections need to be bare metal to metal free of corrosion, debris, and even paint. You...
    view full answer...
  • Relays for a 2012 Nissan Titan
    We do have the Curt Relay Kit for Nissan Aftermarket Tow Package # C57000 if any of the relays on your 2012 Nissan Titan need to be changed out. I have attached a video of the kit being installed on a 2011 Titan that you can use as a reference, but you will want to check your owner's manual to verify any fuse or relay locations. It is also possible that some wiring could be damaged or you could have some debris or corrosion inside the connector on your Titan or your trailer. Let me know...
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  • 2011 Nissan Armada Trailer Running Lights Relay
    If you installed a trailer wiring harness on your 2011 Nissan Armada and the running lights are not working, then you may need to install an additional relay under the drivers side dash. You can use one of the blue relays from the Curt Relay Kit # C57000 for this. For some reason Nissan included the running light relay on some models but not others, even if they did not come with a tow package. The location for the running light relay is behind the drivers side dash to the left of the...
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  • Troubleshooting Trailer Running Light Circuit of 2012 Nissan Titan Not Being Active
    Under the dash of your 2012 Nissan Titan there is a relay harness that you will need to check. The top blue relay would be the running light circuit. You can easily test to see if it's bad by swapping one of the nearby blue relays into it's slot to see if the problem goes away (it will then move to a different circuit since the relay is bad). If you need to replace it, you can use one of the blue relays from the Curt Relay Kit # C57000. I attached an install video that shows trailer towing...
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  • Is Additional Relay Needed to Install Brake Controller in 2012 Nissan Titan for Brake Controller
    You are good to go as-is. If the brake output circuit is active when you apply the vehicle brakes that means the controller is working like it should and no other relay would be needed.
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  • Why Aren't My Lights Working On My 2019 Nissan Frontier After Installing A Plug-And-Play Harness?
    This is actually a fairly common issue with the newer Nissan Frontier's like your 2019 Nissan Frontier. What the issue is, is a missing relay to activate the circuit. You can add one with the Curt Relay Kit for Nissan Aftermarket Tow Package # C57000. You should be able to find this behind the passenger side kick panel, or behind the dash to the left of the steering wheel. Attached is a product review video for you to check out as well.
    view full answer...
  • Need Blue Replacement Relay a Fit for 2017 Nissan Frontier
    It sure is! The blue relay is included in the Curt Relay Kit # C57000 and it is indeed the same relay that activates the tow package circuits on a 2017 Frontier. As you mentioned, the jumper harness is located behind the passenger kick panel.
    view full answer...
  • Where to Install Running Lights Relay on Nissan Frontier
    If the trailer parking/running lights aren't working when connected to your Nissan Frontier then you should just need to add a Blue Relay from the kit # C57000 that you referenced. On your Frontier the harness you need to access will be located behind the passenger side kick panel. This is where the blue relay for the running light circuit needs to be installed. I have attached an image to assist.
    view full answer...
    Image 1 for
  • Troubleshooting no Running Lights on Camper Towed by 2004 Nissan Xterra
    Some Nissan vehicles are going to require an additional relay, which is going to be in the fuse panel located in the cab. Should that relay be missing or gone bad you would need to replace it with one of the blue relays from the Curt Relay Kit # C57000. It also may just be that you don't have a good ground connection. You will want to make sure your ground connections are attached to bare metal surfaces that are clean and free of dirt, paint or corrosion. I have attached a couple links...
    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...

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