Trailer Wiring Harness Installation - 2014 Buick Enclave

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How to Install a Trailer Wiring Harness on a 2014 Buick Enclave


Today, on our 2014 Buick Enclave, we're going to take a look at, and show you how to install, the Curt T-Connector Vehicle Wiring Harness for factory tow packages. Now the first step in our install, what we're going to do is come up just to the outside of the passenger side tail pipe here. If we reach directly in between the outside body and the steel body, right up here, we're going to find our connector. Now, because it's hard to see underneath we'll show you out here. It's going to be located about right here in this area, so you just have to reach up in there. I'm going to take my trim panel removal tool and try to take out that Christmas tree fastener. You could use a trim panel tool.

You could use a screwdriver. Now with our kit we're going to have our factory connection point here, that transfers all of the signal that it's going to capture into a usable signal for our trailer on our 4-pole flat. Then we're going to have the fuses and relays that we need to put in place to make sure these signals are coming through. Then here we're going to have a dust cover that'll go on the end and protect our 4-pole flat plug. Now we're going to take a little bit of the LubriMatic Dielectric or electrical contact grease. We're just going to put it down on there on each of our connectors. It's just going to keep out any moisture, dirt, debris.

Now it's just a matter of plugging this into the plug we found up top. Now we want to squeeze it together until we here that little audible click and then we'll give it a good push pull just to make sure it's going to stay connected and we don't have any issues there. Now it's time to bring our 4-pole flat over toward the middle of the vehicle where we're going to be using it. The main brace that connects from the end of the frame rail to the outer most part of our bumper here . I just run my plug right behind there and pushed it through, that way we'll keep it up out of the way of the exhaust and all that kind of stuff .. Bring it on over, now we'll remove our middle panel here.

We're just going to have a couple of twist fasteners that hold it in place on each corner. Then once those are separated, you see it's just going to come right on down for ya. We can run this right over here to the middle. Now we'll take care of connecting our bracket in just a minute here. Let's go ahead and get our fuses and relays in place. Now to get to our fuse area we need to open up our hood here.

Right over here on our passenger side we'll have three little tabs to push in. We got one here on the back side, one right up here on the side and then this one on the passenger side here. It's a little harder to get to, you can use a little screwdriver or something and just pop it on off. There we can see what we're after. Now we're going to start with our red 10 amp fuses. The first one's going to go right up here at this top corner. You see you got your three main relays here, one here. It's going to be just toward the front of the car from there, that's labeled "F8". We'll just push that one in. Now from that one we want to come toward the middle of the vehicle. Once we get past this relay we can come over one row and here we're going to have "F21" and "F17". We'll place a 10 amp fuse in each one of those. Then from there we can go all the way to the row closest to the middle of the vehicle, and we'll go over our relay, and right here we're going to have "F41". That one also gets a 10 amp fuse. Now we'll grab our two 30 amp fuses. This was the "F41" we just put in, we're going to come toward the rear of the car one row, and if we come up we'll have one and two empty slots. The one closest to the outside is "F30". The one closer to the middle of the car is "F34". Each one of those is also going to get a 30 amp fuse. Now we can move on to our relays. We're going to place two relays in. If we look toward the middle front of our fuse box we're going to have two relays already installed, there's going to be two empty slots just behind them. We're going to place our relays in there. These are "R15" and "R16". Now with all those in place let's put our cover back on. Let's go check our wiring and make sure it works. Now to test our wiring we want to use a test light. We're going to take the ground clamp, attach that to the ground side or that bare terminal. That's going to verify that we've got a good connection there. Then we'll have the head lights in our vehicle turned on and we'll test our brown wire, and we want to see a constant signal. All right, that's a good sign. Next we'll have the driver's side blinker turned on. That should give us a flashing signal from our yellow wire. We'll move to our green wire here, that should give us a flashing signal from our passenger side turn light. Finally, we need to test the breaks and with the brake peddle pressed we should get a constant signal from the yellow and the green wire. Now that we know our wiring's working properly let's get it attached. What I'm going to do is just bring my wiring behind my hitch. I'm going to bring it right down over in this area. We've got a tow ready bracket that says part number 18144. It's going to mount right to the tab that already exists on our hitch. If your hitch doesn't have this tab you can incorporate one of the tow ready short brackets which is part number 18140 and the two in combination will give you this effect. I'm just going to push 4-pole plug through the back of the bracket. You can see it's got a couple catches that are going to catch on the 4-pole and then that holds it nice and tight there on the back side. Take our provided screws, we'll place them down through our two holes that are pre-drilled in the hitch, bring our bracket up and on and we can put on our serrated lock nuts. We can use the socket and tighten them down. Sometimes you'll put a screwdriver on top to keep the screw from spinning, sometimes it doesn't spin. This bracket's really handy for keeping our wiring up and out of the way. You've seen cars before, going down the road, their wiring's kind of dragging behind them. That eliminates that here for us. We can use a little bit of tape to clean up the look on it. We'll just bring it up, just like that, and use a few of the provided zip ties to tape off any excess that we might have. If we trim off our little bit of excess there, we've got our wiring installed and we're ready to hook up to our trailer or plug in our cargo carrier and we can hit the road. That'll complete today's installation of the Curt Custom Fit T-Connector Vehicle Wiring Harness, part number C56245, on our 2014 Buick Enclave.


Questions and Comments about this Video

Info for this part was:

Video by:
Andrew K
Video by:
Kathleen M
Video by:
Dustin K
Installed by:
Jeff D
Video Edited:
Joshua S
Video Edited:
Jacob T
Video Edited:
Chris R
Test Fit:
Alan C
Test Fit:
Randy B
Test Fit:
Andrew S
Test Fit:
Robert C

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