Trailer Wiring

Select Vehicle Year

  
Trailer Wiring

Available Years for Trailer Wiring


Trailer Wiring Harness

Make installing your trailer wiring harness as easy as possible with a custom fit wiring harness. Trailer wiring from Draw-Tite, Curt, Pollak, Tow Ready, Bosal, and Hopkins eliminates or reduces the need to cut and splice wires. It also helps to protect your vehicle's sensitive electronics from mis-wired trailers.

Choose the year of your vehicle to the left to find a custom fit trailer wiring harness.




Wiring Adapter Fitguide



Trailer Connectors and Adapters



Wire and Wiring Accessories



Trailer Wiring Manufacturers



Search For Custom Fit Accessories
Select A Category Below




Custom Fit Vehicle Wiring Information Videos

Trailer Wiring Harnesses Troubleshooting

Today we are going to cover kind of a different subject. Basically, we are going to talk about getting your wiring installed and what is happening afterward. Okay, for instance, you went to the trouble to get your wiring installed, you plug it into your trailer, and nothing happens. There could be a lot of different things going on with it. First off, you need to figure out for sure whether it is on the towing vehicle side - the car or truck - or if it is something on the trailer. We will show you how to test the different types of wiring systems we have shown here. And that way you can tell for sure if it is your wiring harness or if it is your trailer.


How To Differentiate a Two Wire and Three Wire System

Today we are going to do the Frequently Asked Questions of what is the difference between a three wire system and a two wire system. It is actually very easy and very simple. All it is, is you take away two wires and the same thing applies to the four and five wire system. Starting off on the car side we are going to attach the wiring to, we are going to have five wires. Green is going to be right turn, red is going to be the brake signal, yellow is going to be left turn, brown is going to be your running lights, and the white is going to be ground. When you talk about the three wire system you are only talking about the right turn, the brake signal, and the left turn. You omit the brown wire and the white wire. That is our three. On the two wire system you are only dealing with the two combined signals, the brake signal and the turn signal on the same wire. We are only dealing with the left and right turn. 00:46


Trailer Wiring Harness Installation - 2006 Kia Sedona

Today were going to show you a popular upgrade. We have here a four pole flat that has been installed on a vehicle. The owner has a boat trailer now and it has a five wire flat. So were going to convert that four wire to a five wire flat. We will show you how to deal with part number 20036 which is the adapter itself, and the bracket which is part number 20046. Our first step we need to do is take off the four pole and then well uninstall the bracket and put in the new bracket. It may take some force, but you have to pull to get this out of here. We actually used a rubber mallet to tap it a little bit, now this bracket can come off which we have previously loosened up. Now well install our new bracket and it will go in the same spot as before. What were going to do next is get our four pole ready which we have cleaned out with WD-40 and then were going to put in some dielectric grease. Well put that inside here and then were going to attach our four pole from our adapter inside there.


How To Troubleshoot a Modulite Demo

Today we are going to troubleshoot a modulite that is not really working so we will check it out and show you what to look for. This will apply to all modulites and this will also apply to converter boxes as well. The only difference being that it does not have a power wire for a converter box. The first thing we want to do is put a tester on the 4-pole just to make sure. We will hook up our ground to our ground lead and then we will turn on the left turn signal which we have going, we have got nothing. You can turn on the other signals and see what we have got, nothing here. Try the running light circuit, nothing here either. 00:28


Testing and Troubleshooting a Modulite Vehicle Wiring Harness

All right today we are going to go over how to check over a modulite as shown right here which converts a 5 wire to a 4 wire system. We are going to go over the basics which are really simple. Basically we are just going to test input into the modulite and test the output of the modulite. That will tell us one of two things, we have no input going into the modulite, that means there is something wrong on the car side of the connector, there is nothing wrong with the modulite. If you have power going into it, but nothing coming out then you know chances are it is the modulite or there is a problem on the trailer itself. When testing you always want to test these modulites or converter boxes without the trailer hooked up first.


T-One Wiring Harness Explanation

Today we are going to show you a little bit of wiring. Basically kind of like wiring 101 and what to look for when your going to hardwire into the vehicle. What hardwire means is actually getting to the wire and splicing into them to make a connection. T1 connectors are different. They actually have a connection point and harness which you take apart and fit the T in the middle of that. Now on this vehicle we will show you the typical wiring schematics and a couple variants from that. The typical connection point is like where this wiring comes into the back of the tail light and there is always going to be a connection point, almost always. Older vehicles, it would have just ran straight, but with pretty much of your newer vehicles you are always going to have a snap connection like this. Basically a T1 connector simply would just go ahead and fit in between this harness.


Hot Lead Fuse Installation

Today on our 2005 Chevy Silverado, we are going to hook up the hot lead for the seven pull connecter at the back of the truck. To do this well simply remove the fuse box cover and the first position, on the first row is a blank fuse, we are going to remove it and install a 30 amp fuse. With that fuse installed, we can go ahead and replace the cover and were now hot at our seven pull connector. There you have it with the install of the hot lead fuse on our 2005 Chevy Silverado.




Custom Fit Vehicle Wiring Videos

Tekonsha Custom Fit Vehicle Wiring 118762 Review

Speaker 1: Today, we're taking a look at a T-1 vehicle wiring harness with a four-pull flat trailer connector. This product fits certain years and models of the Hyundai Sonata. To ensure that this is a fit for your vehicle, you can always use the vehicle fit guide at etrailer.com.It provides a four-way flat trailer connector at the back of your vehicle to power your trailer signal lights. It is compatible with five-pull, six-pull, and seven-pull adapters. Adapters are sold separately. It comes with a dust cap for the four-way flat connector.


Hopkins Plug-In Simple Vehicle Wiring Harness Installation - 2015 Ford Escape

Speaker 1: Today on our 2015 Ford Escape we're gonna be taking a look at, and showing you how to install, the Hopkins Plug-In Simple Vehicle Wiring Harness with 4-Pole Flat Trailer Connector, part number HM11140514.So here's what our wiring looks like when it's fully installed. It is gonna stay on the outside of the vehicle at all times, and whenever we are ready to use it we can take of the dust cover from our hitch here, and that's gonna provide us with a 4-pole flat trailer connector, it's gonna give us all the required lights to get down the road safely, such as our headlights, taillights, and turn signals. One thing I do like about this wiring kit, is that right here on the of the 4-pole it does have a protective coating, and since it is on the outside that's a nice ting to have.Now that we've seen the end result, let's show you how we get it installed. To begin our installation we're gonna need to open up our rear hatch, so we can get access to our taillights so we can pull them out. Now on each side we're gonna have two plastic covers covering the bolts that are holding our taillight in. So I'm gonna take a flat blade screwdriver, and I'm actually just gonna come underneath these covers and pop them out.


Trailer Wiring Harness Installation - 2014 Ford Van

Speaker 1: Today on our 2014 Ford Van we're gonna be taking a look at and showing you how to install the T-One vehicle wiring harness with a four-pole flat trailer connector, part number 118551.Here's what our wiring looks like when it's fully installed. Now it is gonna live on the outside of the vehicle and it's gonna provide us with a four-pole flat for our trailer giving us all the required lights to get down the road such as our turn signals, brake lights, and clearance lights.As far as the installation goes it's gonna be pretty straight forward. There's gonna be a few connections behind the taillights we're gonna have to make and then we're gonna have to run a line of wire up to the battery. Now that we've seen what it looks like when we're done let's show you how we get it installed.To begin our installation we're gonna need to remove our taillights and we're gonna have four fasteners holding them in place, I'm gonna be using a T15 torques bit to remove those. Once we have all the bolts removed we can grab the taillight and we gently pull it out and just push in on that tab, it should release the connector and we'll do the same thing for the other one. Now with this taillight removed we're gonna go ahead and do that on the other side too.We're gonna go ahead and grab our wiring harness and we're gonna start with a green wire on the passengers side.


Trailer Wiring Harness Installation - 2010 Jeep Liberty

Speaker 1: Today, on our 2010 Jeep Liberty, we're going to be taking a look at and showing you how to install the Tekonsha T-One Vehicle Wiring Harness with four-pole flat trailer connector, part number 118554.This is what our wiring harness looks like when it's installed. We have plenty of length. However, if there was more that you needed, it's folded up on the back side of the hitch here, just zip tied. You can see it has a dust cap that's connected, so you don't lose it. Whenever you're not using a trailer, to keep it from dangling, you just hook it on your ring.Now, this is what you're going to get in your wiring kit. It's going to have your connectors for both your tail lights, plug into your existing connections.


Tekonsha T-One Vehicle Wiring Harness Installation - 2018 Kia Sportage

Speaker 1: Today on our 2018 Kia Sportage we're gonna be taking a look at and showing you how to install the Tekonsha T-One Vehicle Wiring Harness with Four-Pole Flat Trailer Connector, part number 118698. So here's what our wiring's gonna look like. I do want to mention that the bracket that it's mounted to here is sold separately, but you can pick one up on our website. The wiring kit itself is gonna give us a four-pole flat trailer connector, and it's gonna come down right by our hitch so our wires can be ready whenever we're gonna do a tow.It's gonna give us all of our required lights to get down the road safely, and within the law. Giving us our taillights, brake lights and turn signals. Now, it is a custom kit, so it's gonna cut down the installation time quite dramatically, and we're not gonna have to splice in or cut any of our factory wires.


Hopkins Plug-In Simple Vehicle Wiring Harness Installation - 2018 Subaru Crosstrek

Speaker 1: Today, in this 2018 Subaru Crosstrek, we'll be having a look at, and showing you how to install, the Hopkins Plug-in Simple Vehicle wiring harness with four-pole flat trailer connector, part number HM11143865.Here's what our wiring looks like installed. You'll notice we have an adequate length wire to secure it to the safety chain loops on our hitch, with the provided dust cover. Once you're ready to tow, you can unclip the dust cover, and hook up to your trailer. This wiring harness is great because it plugs into your vehicle's factory tow package wiring, with no cutting or splicing required, and gives you the basic lighting functions that are required by law in order to safely and legally tow a trailer.Our green wire provides our right-turn signal and right brake light. Our yellow wire provides our left-turn signal and left brake light. Our brown wire is for our tail lights and marker lights.


Best 2012 Toyota Matrix Trailer Wiring Options

Speaker 1: Today on our 2012 Toyota Matrix we'll be having a look at the best trailer wiring operations. Our first option here off to the right is the Tekonsha T-One vehicle wiring harness with a four-pole flat trailer connector, part number 118460. Over here to the left we have the CURT T-Connector vehicle wiring harness, also with a four-pole flat trailer connector. It's part number C56035.Now the biggest differences that we found between our wiring harness comes down to the power output that they produce. Our CURT T-Connector wiring harness here puts out three amps of power for our stop and turn signal circuits, with six amps total power for your taillight and running light circuits. Our Tekonsha wiring harness, on the other hand, that one puts out 2.1 amps for the stop and turning signal circuits and 4.2 amps for the taillight and running light circuits.


Best 2011 Toyota Matrix Trailer Wiring Options

Speaker 1: Today on our 2011 Toyota Matrix we'll be having a look at our best trailer wiring operations. Our first option here off to the right is the Tekonsha T-One vehicle wiring harness with a four-pole flat trailer connector, part number 118460. Over here to the left we have the CURT T-Connector vehicle wiring harness, also with a four-pole flat trailer connector. It's part number C56035.Now the biggest differences that we found between our wiring harness comes down to the power output that they produce. Our CURT T-Connector wiring harness here puts out three amps of power for our stop and turn signal circuits, with six amps total power for your taillight and running light circuits. Our Tekonsha wiring harness, on the other hand, that one puts out 2.1 amps for the stop and turning signal circuits and 4.2 amps for the taillight and running light circuits.


Best 2010 Toyota Matrix Trailer Wiring Options

Speaker 1: Today on our 2010 Toyota Matrix we'll be having a look at the best trailer wiring operations. Our first option here off to the right is the Tekonsha T-One vehicle wiring harness with a four-pole flat trailer connector, part number 118460. Over here to the left we have the CURT T-Connector vehicle wiring harness, also with a four-pole flat trailer connector. It's part number C56035.Now the biggest differences that we found between our wiring harness comes down to the power output that they produce. Our CURT T-Connector wiring harness here puts out three amps of power for our stop and turn signal circuits, with six amps total power for your taillight and running light circuits. Our Tekonsha wiring harness, on the other hand, that one puts out 2.1 amps for the stop and turning signal circuits and 4.2 amps for the taillight and running light circuits.


Articles about Custom Fit Vehicle Wiring





^
About Us
photos and videos
1,056,204

Original Photos & Videos

Produced to make sure you know what you are getting and you get exactly what you need.

installations
35,570

Installations Completed

To make sure products work and fit the way they are supposed to.

etrailer call center
2,476,511

Phone Calls & Emails Answered

1,125,924 phone calls and 1,350,587 emails to help find the right solution.

etrailer training
400+

Average Hours of Product Training

We get to know our products firsthand so experts can better help you.

etrailer service
71

Years of Quality Customer Service

Assisting our neighbors and customers, face to face at the counter.

etrailer experts
193,357

Pages of Expert Information

Created to make sure you have all the answers to your questions, from real experts.