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Trailer Wiring

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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.

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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.


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.


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 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


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.


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 T-One Vehicle Wiring Harness Installation - 2013 Lincoln MKX

Today on our 2013 Lincoln MKX we're going to be taking a look at and showing you how to install the Tekonsha T1 Vehicle Wiring Harness with a four pole flat trailer connector. This wiring is going to provide us with all of the necessary lighting functions to not only be safe but legal. We're going to have our tail or running lights, our turn signals, and our brake lights. Now the power output is going to be more than sufficient enough to operate all your trailer's lights correctly. It's also going to have a nice dust cap, which will not only keep your terminals protected and corrosion free, but it also serves as a holder for when you're not using your four way. If you would rather have this permanently mounted in a bracket somewhere in this area, you can pick a bracket up at etrailer.com.Now that we've gone over some of the features, let's get it installed together.


Bargman Custom Fit Vehicle Wiring Harness Installation - 2017 GMC Sierra 2500

Today on our 2017 GMC Sierra Denali 2500HD, we're going to be taking a look at, and showing you how to install, the Fifth Wheel or Gooseneck 90-Degree Wiring Harness with Seven-Pole Plug.This is what our seven-way plug in harness looks like installed. Now, this is going to give you all your necessary lighting functions, and it's going to solve your issue of having to drape your plug over and above your tailgate. Now the cap is spring loaded; that way, when you're not using it, it stays nice and tight and sealed, and keeps any dirt and debris and moisture out.It also has a clip right here, which when you do have your seven-way plugged in, it'll help that from getting pulled out accidentally. Now, there is some raised lettering on the cap. That actually will tell you what each terminal inside is used for.One of my favorite things about this is it's super easy to install. Everything is just plug and play.


Fifth Wheel and Gooseneck Wiring Harness Installation - 2018 Chevrolet Silverado 1500

Hi, I'm Shane with etrailer.com. Today we're going to be taking a look at, I'm going to show you how to install Draw-Tite's Fifth Wheel Gooseneck Wiring Harness. What this is going to allow you to do is to plug in, in the back of your truck, without having to dangle that wire over the back to your factory wiring.Nice thing about it is, it's gonna allow you to maintain a use of your factory wiring on your bumper, while giving you the extra plug in the back of the truck.It's gonna give you a seven pull connection. A spring loaded lid. The lid is gonna have a foam ring in it that's gonna seal right around this edge to help keep any dirt and debris and moisture from your connection points. It's gonna be a very durable plastic, it's gonna hold up in all weather conditions.


Best 2013 Toyota Corolla Trailer Wiring Options

Today we're going to be taking a look at your best wiring options for your 2009 to 2013 Toyota Corolla. This is the Tekonsha kit. In the middle we have the CURT. Over here is the Hopkins. Now the biggest difference with these that I found is probably the ease of installation. The CURT and the Hopkins are going to install exactly the same.


Articles about Custom Fit Vehicle Wiring