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  1. Custom Fit Vehicle Wiring
  2. GMC
  3. Terrain
  4. 2014
  5. CURT
FITS 2014 GMC Terrain
Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector

Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector

Item # 56094
Our Price: $29.35
Custom Fit Vehicle Wiring
Confirmed to Fit
2014 GMC Terrain

without factory tow package

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Shipping Weight: 0.61 lbs
In Stock
56094 - 4 Flat CURT Trailer Hitch Wiring
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Call at 1-800-940-8924 for expert service. We are your GMC custom fit vehicle wiring experts, and offer a great price. carries a complete line of CURT products for your GMC Terrain 2014. Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector part 56094 from CURT can be ordered online at Complete custom fit vehicle wiring installation instructions and technical support.
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2014 GMC Terrain - Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector

  • Custom Fit
  • Trailer Hitch Wiring
  • 4 Flat
  • No Converter
  • CURT

Quickly and easily install a 4-way trailer connector on your GMC Terrain with this custom harness. T-connector plugs directly into existing wiring - no cutting, splicing or tapping required.


  • Provides a 4-way flat trailer connector at the back of your vehicle to power your trailer's signal lights
    • Compatible with 5-pole, 6-pole and 7-pole adapters (sold separately)
  • Connects quickly and easily - no cutting or splicing of wires
    • Locate connection points behind tail lights
    • Plug in T-connector
  • Comes with dust cap for 4-way flat connector
  • Limited 1-year warranty


This custom-fit T-connector plugs into your vehicle's wiring harness, which is located behind the driver's-side and passenger's-side tail lights. You will have to remove the tail light assemblies to access this harness.

Once installation is complete, the 4-way connector will be stowed beneath your vehicle, near the trailer hitch. A mounting bracket (sold separately) is recommended to keep the connector secure.

It is recommended that you use a small amount of grease on all electrical connections - the plugs on your automobile and the 4-pole connector itself - to help prevent corrosion.

56094 CURT T-Connector - 4 Wire

Installation Details 56094 Installation instructions

California residents: click here

Customer Satisfaction Score:

Customer Reviews

Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - 56094

Average Customer Rating:  4.9 out of 5 stars   (929 Customer Reviews)

Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. T-connector plugs directly into existing wiring - no cutting, splicing or tapping required.


The wiring harness was very easy to install, took about 30 minutes to install.

Great,I like it a lot
Donald - 08/23/2023


This wiring harness fit my vehicle perfectly and, thanks to the helpful step by step video provided by, was very easy to install.

The wiring harness for my rebuilt trailer was easy to install and is working very well. I would recommend this product.
Tom i - 06/05/2023

2017 GMCTerrain

Product arrived in a timely manner with one of the hangers fully exposed out side the box. The heavy construction of the Hitch receiver proved to be too much for the delivery process and the unit was in perfect condition. I viewed the video and started the job of installation. Took me about 1 and a half hours to complete the job.
The design of the unit was such that no drilling was required and the included fish wire was a wonder tool bringing bolts and square hole locks to the proper hole down a hollow frame. The wiring kit was super easy to install with step by step instructions and with NO cutting wires. Sorry it took so long to install. At 82 years old I have slowed a bit. Now I can pull my Jon boat to the lake. Happy Camper.

Great! It was received in a short time, easy to install with great instructions and works well.
Richard - 08/22/2020


I've seen many aftermarket hitches that are obviously not built for a specific car, and they look terrible when installed. The hitch I purchased from was a perfect fit for my car. It was built by Curt Mfg., and was surprisingly easy to install. I had the wiring harness installed in about 45 minutes, and it just plugs into existing wiring (no splicing). And the hitch bolted onto the car with no cutting, drilling or hammering. It was done in about an hour. The finished installation looks like it came with the new car ! The process was much less expensive than having the dealer install it.
Excellent product !!

Still impressed with the installation and the good fit. I have hauled various stuff in my 6 by 6 trailer, up to about 2500 lbs. Works fine. Doesnt feel loose. Doesnt squeak. Had several compliments on the look and subsequent referrals.
Ed H - 06/29/2015


Very well designed for effective installation and use.

2012 Chevrolet Equinox

This wiring harness is very easy to install. I had a bit of trouble getting the tail lights out of our 2012 equinox but with a a second set of hand they slipped out without doing any damage. I used extra zip ties and wire loom to help protect the wire. Be sure to keep it away from the exhaust if you have a V6 with duel exhaust tips. I modified a Curt rubber tube cover to secure the harness to the receiver. I made sure to leave extra wire in behind the hitch so that I can pull it through when I need it.

2015 GMCTerrain

The hitch and wiring harness arrived on time. One of the vertical brackets on the hitch had broken through the box due to UPS manhandling, but nothing was damaged. After re-tapping the welded bolts on my 2012 Terrain the hitch was on in 15 minutes. Fit perfectly and looks like it came with the vehicle. The wiring harness was hands down the easiest product that I have ever installed on any vehicle. I like how nothing needed to be cut or spliced. Took me all of 10 minutes to install. And it works perfectly! I am very happy wit the product and service I received from etrailer.

2010 GMCTerrain

Excellent product, very easy to do. I am not a fan of cutting into existing wiring, so this kit was the answer. It took less than a hour.

The Curt 2 inch hitch for my 2010 GMC Terrain was also an easy installation. All hardware was supplied and extra for situations that maybe encountered, i.e.., bolt holes not threaded from factory. The 2010 Terrain was all bolt on. What I especially like is the fact that it is totally hidden except for the receiver.

2016 GMCTerrain

I installed a Curt hitch receiver on my new 2016 GMC Terrain. I then installed the wiring harness and it couldn't have been any easier. Took me about 20 minutes to install the harness. If all my projects were this easy, I would be a happy camper. Including photo of rear of the car with hitch. The harness connector is hidden up under the bumper cover so that it isn't just hanging down.

2012 GMCTerrain

I ordered this hitch & wiring kit for my 2012 GMC Terrain SLE 3.0 6 cylinder and it went on in less than 30 minutes! I ordered the hitch and wiring harness on Monday (Labor Day even) and the package arrived on Wednesday afternoon - WOW! Thank you eTrailer.


The box wax pretty poor but the hitch was fine.
I've been buying from etrailer for several years, and can't remember ever having anything other than what I expected, which was always great.

2012 GMCTerrain

Fantastic perfect fit easy to use and install 30 min install including reading the owner's manual for conflicts there were none. Trailer hitch and wiring fit my 2012 GMC Terrian like it was from the factory


After installing the Curt vehicle wiring harness and with a outstanding ground on my homemade trailer, every time that I plug in the trailer lights (viola)they work just like they are supposed to.

A year later, the wiring harness is working perfectly. I always recommend etrailer and their products.
Michael - 07/02/2022


Easy on! Used it a few times and love i t!

2015 GMCTerrain

Not quite long enough, says exact fit for gmc terrain but I have about 1 in of slack to try and route the plug

2012 Chevrolet Equinox

Great product ,excellent fit ,easy install with help . Customer service is the best will recommend e trailer to everyone that needs hitches.
Thank you mike S for your help !


We ordered several items and recorded all of them earlier than expected. Everything was exactly as in the photos.


It’s the right product delivered on time, thank you etrailer. Com

2013 GMCTerrain

Hitch fit perfect. A friend and I got it installed easy once I retreaded the weld holes on the SUV. Five and a half years really corroded them. Wiring was smooth also. Will buy from here again


Just installed this harness. Looks like a quality product; delphi connectors to match OEM and harness construction seems very good. Now we'll see how it works and holds up over time.


I found the products I purchased from etrailer to be very good, easy to install at a reasonable price . I was pleased with my customer service from placing the order to delivery and follow up. I highly recommend etrailor and next time a purchase auto accessories I will start with etrailor.


Great Product as asways!

2015 GMCTerrain

This wiring Harness works great extremely easy to install the included self drilling screw for the ground wire is a nice touch no drill required I installed it under the tail light assembly with nothing more than a nut driver. I watched an installation video they used the screw holding the rubber bumper for the hatch door. I feel installing under the taillight fixture is a lot cleaner look also better ground metal screw to metal body. The included zip ties were just the right amount I did not wrap the wiring around hitch as in video I strung it through the bumper cover using zip ties to attach to the metal body of my vehicle. Over all this was the easiest wiring job I have ever done. Just a note the inder frame where the hitch installs has 4 unused holes about 3/8 inch 4 of the push in wire holders would be just perfect for keeping wire secure.I wouldn't even mind if they were the kind that had to be taped to the wire. an extra few dollars for the kit just to get them would be worth it. I would recommend this kit to anyone who has a GMC Terrain


Easy to install. Works as advertised.


Easy installation my only problem, I had to chase the the welded threaded nuts on the SUV. Looks good. I can now hook a trailer up for small hauling jobs

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