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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.


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

Trailer Wiring Harness Installation - 2017 Dodge Durango

Today on our 2017 Dodge Durango, we're going to take a look at, and also show you how to install the Curt T connector vehicle wiring harness with the four pull flat trailer connector. Part number is C55515. This is what our wiring harness is going to look like when we pull it out of the package, really nice, straightforward, easy install here. Basically we've got a plug here, this is going to go right into our factory prep package, we'll show you where to find that in just a moment. It's going to take those signals, running it through our wire, and it's going to leave us with right turn, and brake, left turn, and brake, running lights, and also ground. This is going to work out good for cargo carriers, it's going to work out good for trailers. Also, we're going to have a protective dust cap, that's going to go around the end and protect it against moisture, or dirt getting in the plug.


Trailer Connector Socket Installation - 2017 Dodge Durango

Today on our 2017 Dodge Durango, we're going to show you how to install the Hopkins 7 and 4 Pole Trailer Connector Socket with Mounting Bracket, part number is HM40975. Here's our wiring kit installed. The thing I really like about it, we get both the 7 pole and the 4 pole here on the back of our vehicle. That's going to eliminate the need for us to carry around adapters to go from one to the other. Each cover is spring loaded. We've got stainless steel springs in here to help keep those doors closed. If you look inside, it's actually a rubber gasket that's going to go all the way around to prevent moisture and things like that from getting inside.


Tekonsha Custom Fit Vehicle Wiring 118689 Review

Today we're going to be taking a look at the T-1 Vehicle wire and harness with the 4 pull flat trailer connector. This product fits certain years and models of the Chevrolet Malibu. To check or double check if this is a fit for your vehicle you can use the vehicle fit guide located at etrailer.com. This is going to provide a 4 way flat connector at the back of your vehicle to power trailer signal lights. This is compatible with 5 pull, 6 pull, 7 pull adapters. Adapters are sold separately.


Trailer Wiring Harness Installation - 2016 Ford Edge

Today on our 2016 Ford Edge, we're going to take a look at, and also show you how to install, the Tow Ready T1 Vehicle Wiring Harness, with the four pull flat trailer connector. Part number is 118669. This is what our kit's going to look like when we pull it out of the package. Of course, this is our main goal, getting a working four pull trailer connector there at the rear of the vehicle. This is going to give us right turning brake, left turning brake, running lights, and also ground. You can see they've got a nice dust cover. That way you can put it over the end, and protect it from moisture, protect it from dirt, and things like that getting in. That's going to come up to the heart of our system here.


Tekonsha Custom Fit Vehicle Wiring 118613 Review

Today we're going to be taking a look at the T1 vehicle wiring harness with the 4-pole flat trailer connector. This product fits certain years of the Ford Transit connect. To see if this is a fit for your vehicle or to double check if it's a fit for your vehicle, you can use the vehicle fit guide located at etrailer.com. It's going to provide a 4-way flat trailer connector at the back of your vehicle to power your trailer signal lights. This is compatible with 5-pole, 6-pole and 7-pole adapters. Adapters are sold separately. It comes with a dust cap for the 4-way flat connector; that way you can cover up the connection points when the plug's not being used.


Tekonsha Custom Fit Vehicle Wiring 118512 Review

Today we're going to be taking a look at the T1 Vehicle Wiring Harness with the 4-Pole Flat Trailer Connector. This probably fits a 2000 to 2005 Chevrolet Impala. It's going to provide 4-way flat connector at the back of your vehicle to power your trailer's signal lights. This is compatible with 5-pole, 6-pole and 7-pole adapters, and it's going to come with a dust cap for the 4-way flat plug. That was you can cover up the connection points when it's not being used. The system's designed to connect quickly and easily. You don't have to worry about cutting or splicing any wires.


Tekonsha Custom Fit Vehicle Wiring 118398 Review

Today we're going to be taking a look at the T1 vehicle wiring harness with the four pole flat trailer connector. This product fits certain years and models of the Pontiac Pursuit, Chevrolet Cobalt, and Pontiac G5 Pursuit. To double check and make sure this is a fit for your vehicle you can use the vehicle fit guide located at etrailer.com. This is 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 five pole, six pole, and seven pole adapters. Adapters are sold separately.


Hopkins Custom Fit Vehicle Wiring 33405 Review

Today, we're going to be taking a look at the Hopkins Plug-In Tow Vehicle Wiring Harness. This product fits a 1991 to 1999 Toyota Land Cruiser, and a 1996 to 1997 Lexus LX450. Each vehicle-specific connector is pre-wired and uses OEM connectors for watertight protection, a guaranteed fit, and a really nice look. This harness provides a 4-way flat trailer connector at the back of your vehicle to power your trailer's signal lights. It is compatible with 5-pole, 6-pole, and 7-pole adapters. Adapters are sold separately, and it's going to come with a dust cap for the 4-way flat connector.


Curt Custom Fit Vehicle Wiring C55432 Review

Today we're going to be taking a look at the Curt T-connector vehicle wiring harness with the 4 pole flat trailer connector. This product fits certain years and models of the Chevrolet HHR, Chevrolet Cobalt, Pontiac G5, Pontiac Pursuit, and Pontiac Pursuit G5. Now, to double check or make sure this is a fit for your vehicle, you can use the vehicle fit guide located at E-trailer.com. This is going to provide a 4 way flat connector at the back of your vehicle to power your trailer's signal lights. It it compatible with 5 pole, 6 pole and 7 pole adapters. Adapters are sold separately.


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