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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.




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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

Best 2015 Kia Sportage Trailer Wiring Options

Today we're going to be taking a look at the best wiring options for your 2015 Kia Sportage. Here we have the Tekonsha, and that's going to be Part Number 118526. Now here in the middle is the Curt and that's going to be Part Number C56251. And finally here on the end it's going to be the Hopkins and that's going to be Part Number HM11143795. Now the end result in all our kits is going to be the same. It's going to give us a four-pole flat, allowing us to have our clearance lights, turn signals, and brake lights on our trailer, and all of our wiring kits are going to stay inside of our vehicle until we're ready to use them, then we can drape it out and close our hatch. Now each one of our kits is going to use a power taillight converter, and that's going to keep our vehicle protected from any issues that may arise on our trailer end, and keep any feedback from damaging our electrical system. Now our power converters are going to run off of our battery directly in each one of our kits. Now they do provide us with enough wire and all the hardware to get everything in place, and since it is running directly off the battery, it is going to protect our vehicle from having an overcharge on our electrical system.


Best 2013 Mazda CX-5 Trailer Wiring Options

Today we're going to be taking a look at the best custom fit vehicle harnesses available for the 2013 Mazda CX5. Now all of the wiring harnesses that we have here today are all going to offer the four-pole flat trailer connector. That's going to power the right turn and brake, left turn and brake, running lights, and also it grounds out the system on the trailer. We've got our CURT here. This is a non-powered converter box. This is designed for use only in the CX5 with the incandescent bulb or non-LED bulbs. Then we're going to have the Tekonsha here and the Hopkins here.


Best 2008 Nissan Rogue Trailer Wiring Options

Today we're going to be taking a look at the best wiring options for your 2008 Nissan Rogue. So here we have the Curt T-Connector Vehicle Wiring Harness, and over here we have the Tekonsha T-1 Vehicle Wiring Harness. Now both of them are going to give us the same end result. They're going to give us a four-pole flat and the ability to have lights on our trailer. Now both of our kits are going to live inside of our vehicle until we're ready to tow, and when we are we can simply drop our lead down, we can close our hatch, and our wiring will be right here when we're ready to hook up to our trailer. Now the way our wiring harnesses are going to work is we're going to have T-Connectors that are going to go in between our taillight and our factory harness. Both of our kits are going to use these, and they're both going to have converter boxes.


Trailer Wiring Harness Installation - 2017 Nissan Rogue

Today on our 2017 Nissan Rogue we'll be having a look at and installing the Tekonsha T-One vehicle wiring harness with four-pole flat trailer connector, part number 118480. Here's what our wiring looks like installed. When it's not in use we can easily store it in this compartment out of the way so it's completely hidden. When we're ready to tow our trailer, you can open the compartment on up, grab our wiring, drape it down on the side of our latch here for our hatch, close the hatch on up. As you see, we have a good length of wire, hangs down right next to our hitch, that we can hook our trailer wiring up to. We have this built-on dust cover here to help protect it from any dirt or debris getting inside the connectors, causing a poor connection. Now this wiring harness gives you basic lighting functions that are required by law in order to safely tow a trailer. Green wire here is your right turn signal and right brake light.


Best 2016 Kia Sportage Trailer Wiring Options

Today we're going to be taking a look at the best wiring options for your 2016 Kia Sportage. Here we have the Tekonsha. That's going to be part number 118526. Here in the middle is the CURT. That's going to be part number C56251. Finally here on the end, that's going to be the Hopkins.


Best 2016 Nissan Rogue Trailer Wiring Options

Today we're going to be taking a look at the best wiring options for your 2016 Nissan Rogue. Here we have the CURT T-Connector vehicle wiring harness. Over here we have the Tekonsha T-One vehicle wiring harness. Now both of them are going to give us the same end result. They're going to give us a four-pole flat and the ability to have lights on our trailer. Now both of our kits are going to live inside of our vehicle until we're ready to tow. When we are, we can simply drop our lead down and close our hatch.


Best 2016 Ford Taurus Trailer Wiring Options

Today we're going to be taking a look at the best wiring options for your 2016 Ford Taurus. So, here we have the Tekonsha, and that's going to be part number 118599. And here we have the Curt, and that's going to be part number C56093. Now, both of our kits are going to give us the same end result. They're going to give us a four-pole flat - so we can hook up to our trailer - and they're both going to live inside of our car until we're ready to tow. Then we can drape it over our trunk, an it'll be right here, ready to hook up to our trailer. Now, both of our kits are going to protect our vehicle from any problems that may arise on the trailer end, and keep it from feeding back in. Now, they're going to do that with our module boxes, here. Now, the Curt here is going to be a little bit wider, but it is going to be flat.


Best 2015 Nissan Rogue Trailer Wiring Options

Today we're going to be taking a look at the best wiring options for your 2015 Nissan Rogue. Here we have the Curt T-connector vehicle wiring harness and over here we have the Tekonsha T1 vehicle wiring harness. Now both of them are going to give us the same end result. They're going to give us a four pole flat and the ability to have lights on our trailer. Now both of our kits are going to live inside of our vehicle until we're ready to tow and when we are, we can simply drop our lead down, we can close our hatch and our wiring will be right here when we're ready to hook up to our trailer. Now the way our wiring harnesses are going to work, is we're going to have T-connectors that are going to go in between our taillight and our factory harness. Both of our kits are going to use these and they're both going to have converter boxes.


Best 2015 Ford Taurus Trailer Wiring Options

Today we're going to be taking a look at the best wiring options for your 2015 Ford Taurus. Here we have the Tekonsha. That's going to be part number 118599. Then here we have the CURT. That's going to be part number C56093. Now both of our kits are going to give us the same end result. They're going to give us a four-pole flat so we can hook up to our trailer.


Articles about Custom Fit Vehicle Wiring






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