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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.


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.


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.


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


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

Trailer Wiring Harness Installation - 2015 Hyundai Tucson

Today on our 2015 Hyundai Tucson, we're going to be taking a look at and installing the T1 Vehicle Wiring Harness with four pole flat trailer connector. Part number 118501. Here's what it looks like. The reason you'd want one of these, because with this system, with the module, it's going to isolate your vehicle lights from your trailer lights, and it's going to isolate any backfeeding 00:00:25 from your trailer into your vehicle. This system is designed to be stored away inside your hatch when not in use, with this little dust cover that's going to cover up the wiring. We would just close it up, it's out of sight. When you're ready to use it, you just take it out, set out the amount you're going to need, close your door back up.


Trailer Wiring Harness Installation - 2008 Jeep Liberty

Today on our 2008 Jeep Liberty, we're going to be taking a look at and installing the Tow Ready T1 Vehicle Wiring Harness, part number 118554. Now here's what it's going to look like once it's installed. It gives you nice four flat wiring with their weather tight cover. When you're not using it, you can just wrap it around your safety chain link. Now it'll stay there and won't be dangling around the bottom of your vehicle. It's not going to require you to have to cut any wires, tap into any wires, which is going to help save your electrical system. Now we're going to take the liberty to show you what's going to be included in your kit. You're going to have your T1 connectors, your module light which is going to go into your four flat with their weather tight connector, our hardware package, our fuse holder, and our 12-volt wire that's going to run from the battery to the back of the car and tie under our module light. Now let's go ahead and show you how to install it.


Tekonsha Custom Fit Vehicle Wiring 118688 Review

Today we're going to be taking a look at the T1 vehicle wiring harness with the 4 pull flat trailer connector. This products fits certain years and models of the Volkswagen Beetle. It's going to provide a four way flat connector at the back of your vehicle to power your trailer's signal lights. This is compatible with 5 pull, 6 pull, and 7 pull adapters. Adapters are sold separately. It's going to come with the dust cap for the four way flat connector, tat way you cover up those connection points when your plug is not being used. It's going to come with this little black box.


Curt Custom Fit Vehicle Wiring C57008 Review

Today we're going to take a look at the Curt 7-foot long 5th wheel/gooseneck custom wiring harness, with the 7-way connector for aluminum beds. This is a custom fit part. It is designed to fit the 2015 and newer Ford F-150 vehicles that have the aluminum bed and a factory 7-way. This part will provide a 7-way blade style connector in your truck bed to give you hassle free hookup of a 5th wheel or gooseneck trailer. The connector will mount in the truck bed sidewall, the tailgate post, or the wheel well. When you do connect all this, it will retain your factory 7-way connector at the rear of your truck, if you already have one there.


Trailer Wiring Harness Installation - 2015 Acura MDX

Today on our 2015 Acura MDX, we're going to be taking a look at and installing the T-One Vehicle Wiring Harness with four pole flat trailer connector, part number 118628. Here's what it's going to look like once it's installed. This is going to provide you with a four flat trailer wiring to allow you to tow most of your smaller trailers. It is compatible if you want to add an adapter to change it from a four flat to a six or seven way connector. The powered module light is going to reduce stress on your vehicle's wiring system. Simply a plug and play operation, and you don't have to cut any wires or splice, which is a good thing with today's electronics that are in our vehicles. This is what your kit's going to consist of. Going to have our module, our inline fuse that's going to plug right into our factory fuse box in the back of the vehicle, and our four flat connector with a weather tight cap.


Trailer Wiring Harness Installation - 2012 Ford Explorer

Today, on our 2012 Ford Explorer, we're going to be taking a look at installing the Curt T Connector Vehicle Wiring Harness, with four pole flat trailer connector. Part number C56172. Here's what it looks like once it's installed. This is going to give you a nice four pole flat trailer connector with the weather tight cap. This will work with a factory seven pole 00:00:26 installed, or you can just put it in place of the seven way and have a four flat. What's best about this system is you're not going to have to splice any wires. To install it you're just going to plug it into a factory location that's already got power and all the lights.


Trailer Wiring Harness Installation - 2010 Ford Edge

Today, in our 2010 Ford Edge, we're going to be taking a look at installing the Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector; part number C56160. Here's what it looks like once it's installed when you're ready to use it. As we lay it over our inaudible 00:00:19 plate, we want to take caution not to get it near the latch because we don't want to pinch our wires. We can just close it over top, remove the weather-tight cap, plug it into the trailer, and once we're all done, we can cover it back up, raise the hatch, and put the wire in stowaway for safe keeping until we're ready to use it again. Now, with our wiring system installed, it's going to reduce stress on your vehicle's wiring system while you're towing your trailer. It's a very easy install; it just plugs in behind your tail lights and you're going to run power wire up to the front to your battery. Now let's go ahead and show you how to install it. This is what your kit is going to consist of: a module to convert your signals, T-connectors, hardware package, fuse holder, and the power wire that's going to run from the back of your car to your front. This module is going to help protect your electrical system on your vehicle by not overloading the circuit, since it's going to be powered from the battery itself and not tied into your car's electrical system. To start installing, we're going to remove the tail lights by removing the two 8mm bolts.


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