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Trailer Wiring Harness Installation - 2017 Dodge Journey

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How to Install a Trailer Wiring Harness on a 2017 Dodge Journey


Today on our 2017 Dodge Journey, 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 118536. So here's what our wiring looks like when it's fully installed. It is going to stay on the outside of the vehicle, and tit's to provide us a four pole flat trailer connector. Now it is going to provide us with all the required lights to get down the road, such as our clearance lights, turn signals, and brake lights. The dustcover, we can actually use it to attach to our hitch so therefore it's ready whenever we're ready to tow. Now that we know what it looks like once it's installed, let's show you how we got it there. To begin our installation, we're going to have to come to our rear hatch and open it up so we can gain access to our taillights. Now, each one of our taillights are going to be held in by two push pin fasteners and we're going to be using a flathead screwdriver to take them out.

Now, you'll notice that there's a small notch on either side, and that's where we're going to want to pry this center section out from. We can grab the center section and possibly the whole clip comes out, but if not it will come out enough that we can grab it and pull it out. We're going to repeat that for the other three fasteners. We're going to want to grab our taillight, and we're going to want to pull straight back. If it doesn't want to release, maybe give it a little bit of a wiggle, but you don't want to go too much to the side. There's going to be a couple clips holding it in place.

Now that we have it released, we're go ahead and release our turn signal and brake light sockets, pushing in on this tab and pulling outward. For this one up here, we're actually going to have to lift up on that tab and pull out. Then we're going to go ahead and do the same thing on the other side, as well. Before we make our connections, I'd like to give you an overview of where all the wires are going to go. Our yellow wire is going to be going over to the driver's side, and that's going to be for our left turn signal. The red and brown wire here is going to be for our brake and taillight signal, and then our green T-connector is going to be for the right side.

Our white wire is going to be for our ground. Now you'll also notice that we have a black wire that has the end stripped off of it, and that's where we're going to be sending this up to the battery to get power for our convertor box. Now before I start putting everything in place, I am going go ahead and crimp on the extra wire they provide in our kit, that way I don't have to fish out the wire from here and try to make the connection later. Now in our kit they do provide us with some butt connectors, but I'm going to be replacing these with some heat shrink butt connectors, and that's just going to help give us better protection against moisture buildup and corrosion. I'm going to go ahead and take the black wire coming out of my convertor box, slide it into my butt connector, and crimp it down. Now I'm going to take the wire they provide in our kit and I'm going to strip back one end of it, and then I can attach it to the other side of the butt connector coming off the convertor box. I'm going to be using a heat gun to shrink down my connector.

I just want to mention that if you are using a lighter or an open flame, you want to be extra careful not to char the connector or the wire itself. We're going to start by taking our green wire with the two connectors and we're going to drop them down until they reach the floor. The reason why is because this is going to go over to the passenger side and the convertor box as well as the other few components are going to be staying on the driver's side. We're going to take our four pole flat trailer connector end and slide that down as well. And then finally we're going to be sliding down the black wire that we attached with the butt connector earlier. There is quite a bit of black wire so I'm going to take it a little by a little until I can reach through the bottom and start pulling it through. We can go ahead and start with our yellow wire. We're going to have a male and a female plug. We're going to take the male plug that looks like the one on the back of our taillight and we're going to plug it into the vehicle's harness. We'll take our brown and red wire now and again we're going to have a female and a male, and the female is going to plug in. Make sure it locks in place. So we should have a white wire with a ring terminal attached left here on the left side. This is going to be for our ground. We're going to find a clean service, and we're going to take this self tapping screw and secure it down. Now right here seems like a good spot since it's going to be out of the way and behind the taillight. I'll take my self tapping screw and secure it down. We're going to bring our focus on the four pole flat trailer connector wire and our green wire. The four pole flat trailer connector, I'm going to leave at the center where my hitch is, and the green wire I'm going to take all the way over to the passenger side. You just want to be careful around the exhaust here or any moving parts. You want to try to stay away from any heat sources. We're going to have to get our T-connector up to our taillight. The way I'm going to do it is I'm going to take a piece of airline tube that I had lying around and I'm actually going to start feeding it up until I can see that it's coming out the top of my taillight up there. I'm going to take the other end with my T-connector and I'm actually going to tape it to my airline tube there, and then we can go back up top and we can start pulling it through. We can go ahead and pull the tape off and remove the airline tube, and get ready to make our connections. These are going to be the same as on the driver's side, except we're only going to have the one connector to connect, so we can go ahead and take our connector, plug it in, make sure it locks in. Now we can start going back down underneath and running our charge line. Everybody's going to route this wire a little bit differently. Like I mentioned before, you just want to stay away from any heat sources or any moving parts. So I'm going to go ahead and run my wire and then I'll show you how I routed it. I routed my wire over the muffler hanger, then I came back, going over the rear axle, zip tying it along the way. I came down right by my fuel tank and then I followed my emergency brake cable around the side of the frame rail, and then finally I have it stopping right here. Now we're going to need to go up to the engine bay and we're going to use the same type of method to get this up to the top. Again, I'm going to take my airline tube, and we're going to route it down. Again, you want to make sure you stay away from any heat sources and try to stay away from the moving parts so it doesn't damage the wire. Then I'm going to drop this down so I can reach my black charge wire and bring it up to the battery. Here's where the airline tube came out. I'm actually going to take my black wire, I'm going to put it into the airline tube so we can go ahead and move back up top and start pulling it through. We start pulling our wire up, and once we get it up here you want to make sure that you pull all the excess wire out, and it never hurts to take a peek underneath and make sure that the wire didn't get wadded up, preventing you from pulling all the slack out. Our black wire is going to have to run to the positive post on our battery, so I'm going to estimate just about how much we need. This should be plenty, so I'm going to go ahead and cut it back right here. I'm going to go ahead and strip back the end of the wire, and I'm going to take another one of my yellow heat shrink butt connectors and crimp it in place. Our wire system is fuse protected, so I'm going to take the fuse holder and the wire is just one big loop so I'm going to go ahead and cut it in half. Now that it's cut, I'm going to go ahead and strip both ends. Now, on one end of my fuse holder, I'm going to put it into the other end of the butt connector that my charge line came from. Now, on the other end, our kit comes from a ring terminal. I'm going to go ahead and slide that over the stripped wire and crimp it into place. We're going to have a 12 volt power source right here, so we're going to need to remove that nut so we can slide the ring terminal over. We're going to be using a 15 mm socket to remove that nut. We can take our ring terminal, slide it over the post, and then reinstall the nut. Now we can take our provided 15 amp fuse and put it into our fuse holder. Now all we have left to do is tidy up any wires we left loose as well as putting the taillights back in place. Before we can put our taillight back, we are going to have to mount our convertor box. There should be some double sided foam tape already pre-installed on the back of the box. I'm going to go ahead and peel the backing off of it. I'm going to slide it down in between the bumper and the body of my car, and I'm actually going to route it down just slightly and firmly push it against the body right here, that way it's out of the way of the taillight but it's also going to be out of the way of any water coming up from underneath. Now we're going to take the remaining connectors. They're going to match up with our taillights. We can go ahead and plug them in. Just want to make sure everything locks and is secure, and then we can reinstall our taillights. Just want to tuck the excess wire out of the way, make sure it's not going to interfere with anything, line up the tabs and then we can push our taillight back in place. All my excess four pole wire I'm actually going to tie up behind my hitch here and use the zip tie in the kit to keep it from coming down. Now all we have left to do is test our wiring. I'm going to plug in my four pole tester. If you don't have one of these you can pick one up on our website using part number I26. I'm going to grab an extra set of hands so they can run my lights so I can verify that they're working properly. Can you turn on the headlights, please Looks good. Now the left turn signal Good. The right turn signal And the brakes Now the brakes and both turn signals, please Looks like everything is working great. We're ready to hit the road. That will finish up our look at the Tekonsha T-One vehicle wiring harness with four pole flat trailer connector, part number 118536, on our 2017 Dodge Journey.


Info for this part was:

Employee Joshua S
Video Edited:
Joshua S
Employee Jacob T
Video Edited:
Jacob T
Employee Chris R
Video Edited:
Chris R
Employee Zach D
Video Edited:
Zach D
Employee Nicholas E
Test Fit:
Nicholas E
Employee Shane T
Test Fit:
Shane T
Employee Randy B
Test Fit:
Randy B
Employee Brent H
Test Fit:
Brent H
Employee Robert C
Test Fit:
Robert C
Employee David F
Test Fit:
David F
Employee Kathleen M
Video by:
Kathleen M
Employee Dustin K
Video by:
Dustin K
Employee Alan C
Video by:
Alan C
Employee Cole B
Installed by:
Cole B

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