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Nissan Titan Trailer Wiring

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Nissan Titan Trailer Wiring Harness

Make installing a trailer wiring harness on your Nissan Titan as easy as possible with a custom fit wiring harness from Draw-Tite, Curt, Pollak, Tow Ready, Bosal, or Hopkins. A custom kit will eliminate or reduce the need to cut and splice wires in your Nissan Titan while helping to protect sensitive electronics.




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Nissan Titan Custom Fit Vehicle Wiring Videos

Trailer Wiring Harness Installation - 2010 Nissan Titan

Today on our 2010 Nissan Titan, well be installing the Hopkins Factory style seven and four way flat vehicle end trailer connector, part number n40975. To begin our install, well first locate the manufactures seven-pole wiring located behind the bumper. Well go ahead and pull it down as its just held up there by some tape. Then well remove the end cap by pressing on the locking tab, removing the cap, and discarding it as it will not be reinstalled.Next well need to mount the bracket for our new seven and four pole. Well take our bracket and attach it directly here to the bottom of the bumper using the self-taping screws provided with our install kit. Well go ahead and take the manufactures wiring connect it to the back of the new seven and four pole.



Curt Relay Kit Installation - 2011 Nissan Titan

Today on this 2011 Nissan Titan we are going to install the Curt Electrical Relays, part number c57000. First we will need to remove the cover off of the relay box, and then locate the proper connection points. Trailer turn for right hand, trailer turn for left hand, and trailer tow. I am going to start with the trailer turn for left hand which will be this relay here. Firmly press it into place and make sure it locks in. Next we will do the trailer turn right hand, and then we will do the trailer tow.





Nissan Titan Custom Fit Vehicle Wiring Questions and Answers


  • 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.
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  • 4-Way Recommendation for a 2012 Nissan Titan with 7-Way
  • The T-One Vehicle Wiring Harness # 118384 that you referenced would be the correct product for your 2012 Nissan Titan with a 7-way to also install a 4-way. It will plug inline with the 7-way harness you have on your vehicle.
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  • How to Figure Out the Wire Functions for Hopkins 7-Way Trailer Connector on 2004 Nissan Titan
  • Manufacturers can use any colors they want since there isn't really a standard for wire color and function. You will need to test each of the wires using a circuit tester such as # 3808 to determine the functions. Then you can attach them to the back of the 7-Way as shown in the picture I have provided. The colors you have provided are most similar to the picture but you will still want to test the wires to make sure they go in the right places.
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  • Troubleshooting Trailer Turn Signal/Brake Lights Not Working on a 2005 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 with a circuit tester like part # 3808 (sounds like you already did this). The 2005 Nissan Titan should only need 2 relays out of the 3 that come with the Factory Style 7-Way and 4-Way Flat Vehicle End Trailer Connector, # N40975. You will want to consult your vehicle owners manual to determine where the...
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  • Adapting 7-Way Trailer Connector on 2012 Nissan Titan To 4-Pole Connector on Trailer
  • Your Titan would've been factory equipped either with, or without the 7-way trailer connector. If there's indeed a connector on the rear, it would be the 7-way. There's a few ways you can go about doing this. The easiest option would be to adapt the 7-way to work with a 4-pole by using a plug-in adapter like part # PK12716. You could also use the # C55515 that you referenced. You'd unplug the wiring harness from the rear of your 7-way, and plug the # C55515 inline with that connection....
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  • Trailer Tow Package Running Light Fuse on 2010 Nissan Titan Keeps Blowing
  • You could also have a slow blow fuse but either way the issue needs to be resolved or the fuse will keep blowing. There are a couple of things that you can do. First, if there are too many lights creating an overload condition then you could remove some of them (unless required by law). The other way to avoid this issue is to replace the lights with LEDs. LED lights draw a fraction of the power of incandescents so the overload condition would cease when using LEDs. I would not rule...
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  • No Running Lights After Installing Trailer Wiring Harness on a 2013 Nissan Titan
  • On some Nissan Titans and Armadas there is an additional relay that may be required under the drivers side dash for the tail lights. You will see three relay slots to the left of the steering column and one may be missing a blue relay. I have attached a photo showing you what it will look like. You can use the Tow Ready Relay, # 38666-1, for this relay in this slot for the running lights.
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  • Replacement 7-Way & 4 Pole Trailer Connector 20119 Mounting Bracket Too Short for 2012 Nissan Titan
  • What about using washers or some other type of spacer and then longer screws? That might be all you need. Or another option is to use a bracket like # 18140 or # 18136, strapped to the hitch and then attach the bracket from # 20119 to it. These other brackets will move the location of the 7-Way and provide you alternative options for its location.
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  • Only Some Trailer Lights Work with 2005 Nissan Titan with Factory Tow Package
  • We do separately offer only the relays for Nissan vehicles that come as part of the kit you referenced, part # N40975. The three relays by themselves are available as part # C57000. I have linked a video showing installation of these relays in a 2011 Titan. These install in the relay box behind the battery; the underside of the box cover should have labels for each relay socket. If these relays are missing or damaged then this kit should take care of the issue. You might also want to check...
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  • Turn Signals and Brake Lights Not Working On 2004 Nissan Titan Factory Tow Package Wiring
  • If you are testing that actual trailer connector on your 2004 Nissan Titan with a circuit tester, such as # 3808, then the likely culprit causing the brake and turn signals not to work is a bad or missing fuse or relay. Consult the trucks owners manual and/or power distribution box lid to determine the locations of the fuses/relays related to the tow package wiring. Fuses are easy to check but relays are a little harder. Basically to test a relay you need a known good relay that you...
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  • Trailer Wiring Stopped Working After Turning On Hazard Lights on a 2006 Nissan Titan
  • If everything was working but then stopped working as soon as you used the hazards then I think it is fuse or relay related. There could be a short issue of some kind that is not all that bad when just one blinker is working. But with both blinkers going on at the same time, the power draw increases and that could have caused a fuse or relay to fail. For relays you could use # C57000. But I would not replace anything until you have examined all of the wiring and checked for exposed wires...
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  • 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.
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  • Availability and Installation of Trailer Wiring Harness on 2007 Nissan Titan
  • It sounds like you are wanting to install a 4-Way connector to the rear of your 2007 Nissan Titan for your tailgate light bar to plug into. If you do not have a factory 7-way on the rear of your 2007 Nissan Titan you can use the Hopkins 7-Way and 4-Way Vehicle End Trailer Connector, part # N40975, you have referenced. This connector comes with the three relays and the mounting bracket. It plugs into the vehicles wiring harness behind the bumper and gives you a 7-Way and a 4-way at the...
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  • Taillights Not Working on a 2007 Nissan Titan with Factory Tow Package Trailer Wiring
  • The first thing I would check is the trailer wiring running light fuses located in the power distribution box under the hood, they should be fuse number 32 and 36. Once the fuse box is located check the legend on the lid to verify the correct fuses to check. Blown running light fuses are a common problem with the Nissan Titan trucks, and if the fuse is blown you need to make sure your trailer wiring is not shorted before plugging it in again or you will continue to blow fuses. Next,...
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  • Stop and Turn Signals Work But Tail Lights Do Not Work on Trailer
  • 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...
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  • Trailer Turn Signals and Brake Lights Not Working on a Trailer Towed by a 2004 Nissan Titan
  • Since the shop replaced some parts and tested the circuits, it sounds like you have a ground issue on the trailer side. First, make sure that the vehicle side and trailer side connectors are clean and free of any corrosion. Corrosion can build up on the pins but also in the backs of the connectors where the wires attach. Next, make sure that the main ground from the trailer connector is attached to a clean metal surface. Then do the same for the trailer lights. If you recently added...
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  • Will the Hopkins Factory Style 7 and 4-Way Vehicle End Trailer Connector Fit a 2006 Nissan Titan
  • Your 2006 Nissan Titan should have the wiring harness that plugs into the back of # N40975 tucked up behind the bumper. It may be hidden behind another harness or another component. Take a look at the video I have linked showing a typical installation. The included relays will make the wiring harness fully functional.
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  • 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...
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  • No Trailer Brake Lights or Turn Signals on a Trailer Towed by a 2004 Nissan Titan
  • The first thing you will need to do is determine if the problem is on the truck or the trailer. Start by disconnecting the trailer and using a circuit tester like # 3808 if needed to test the trailer connector on the vehicle. Have someone sit in the vehicle cab and go through each function while you test the pins on the trailer connector with the circuit tester. You can use our wiring FAQ article as a guide to what the functions should be, see link. If all of the functions are working...
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  • Troubleshooting No Left Side Trailer lighting on a 2005 Nissan Titan with Factory 7 and 4-Way Wiring
  • You do not need to have an additional 4-Way wiring harness, # 118384, for proper operation of the trailer lights when you have a factory 7 and 4-Way connector. I would start out by checking the trailer connectors at the rear of the vehicle with a circuit tester, # 3808, no trailer attached. This will let you know if the problem is on the vehicle side or trailer side. If you find the problem is on the vehicle side, check the relays that are under the hood of your 2005 Nissan Titan to...
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  • 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.
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  • 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...
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  • 2005 Nissan Titan Trailer Lights Not Working Using Tow Ready Wiring Harness
  • If your 2005 Nissan Titan came with a tow package and a factory installed 7-Way trailer connector then it may be easier to use a simple adapter, like # PK12716, to go to a 4-Way. If your truck did not come with a 7-Way at the back, then you would probably need to add some relays, # C57000, to make the wiring fully functional. The relays are required for trucks that did not come with a factory tow package.
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  • 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.
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  • Trailer Lights Not Working When Using Tow Ready Wiring Harness, # 118384, On 2007 Nissan Titan
  • The Tow Ready Wiring Harness, # 118384, is for a Nissan Titan with the factory 7-Way trailer connector. It will plug into the back of your 7-Way on your vehicle and the other end will plug into the tow vehicles trailer harness connector, behind the bumper on the drivers side. This harness does not come with relays because they are usually installed already when the factory 7-Way is on the vehicle. You might check the accessory fuse block to make sure you have the three relays installed...
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  • How Do I Install Hopkins Nissan 7-Way Connector and Relays part N40975
  • We do not have a diagram, but we do have a video that should be very helpful. Valley offers a similar part that requires the same relays. Follow the video and it should be pretty straightforward. Check out the link below.
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  • Are Any Other Parts Needed to Install the 7-Way Connector # N40975 On a 2006 Nissan Titan
  • We have a video of the wiring installation on a 2006 Nissan Titan for you to review. It shows where the connector is above the spare tire and how to connect the wiring harness at the rear of the vehicle. It also shows where to install the relays that are included with the Factory Style 7-Way and 4-Way Flat Vehicle End Trailer Connector, item # 30608. You will not need anything else to complete the wiring installation, unless you are installing a brake controller for a trailer with brakes. I...
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  • 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...
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  • Turn Signals on 2007 Nissan Titan Not Working with Replacement 7-Way Trailer Connector # 30955
  • The item you selected, 30955, does not have the relays included to activate the tow package on your vehicle - thus no turn signals. You need # N40975, the Factory Style 7-Way and 4-Way Flat. This item has the relays you need for the activation of the factory tow package. I also recommend using a circuit tester like # 40376 to test your 7-way on the vehicle end for proper function. The yellow wire is the left turn signal and the green is the right signal. These are also your brake lights....
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  • Factory Style 7-Way and 4-Way Flat Vehicle End Trailer Connector for a 2007 Nissan Titan
  • The # N40975 wiring package is all that you need to set you Titan up for towing. It comes with all the relays needed as well. This trailer connector provides both a 4-pole and a 7-way connector. To see a video of the connector being installed on a similar vehicle, click the provided link.
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