1. Custom Fit Vehicle Wiring
  2. Tekonsha
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  4. Trailer Hitch Wiring
  5. 4 Flat
  6. Powered Converter
T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector

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

Item # 118750
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Custom Fit Vehicle Wiring

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Tekonsha Trailer Hitch Wiring - 118750
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Quickly and easily install a 4-way trailer connector on your vehicle with this custom wiring harness. T-One connector plugs directly into existing wiring. Powered ModuLite reduces strain on wiring system. Call 800-298-8924 to order Tekonsha custom fit vehicle wiring part number 118750 or order online at etrailer.com. Free expert support on all Tekonsha products. Guaranteed Lowest Price and Fastest Shipping for T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector. Custom Fit Vehicle Wiring reviews from real customers.
  • All Info
  • Reviews (39)
  • Q & A (38)
  • Photos
  • Why etrailer?

Tekonsha Custom Fit Vehicle Wiring - 118750

  • Custom Fit
  • Trailer Hitch Wiring
  • Tekonsha
  • 4 Flat
  • Powered Converter

Quickly and easily install a 4-way trailer connector on your vehicle with this custom wiring harness. T-One connector plugs directly into existing wiring. Powered ModuLite reduces strain on wiring system.


Features:

  • 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
    • Locate connection points behind tail lights
    • Plug in T-connector
    • Run hot lead to car battery
  • Includes ModuLite to ensure that your vehicle's wiring matches that of your trailer
    • Powered module connects directly to battery to avoid overloading vehicle's electrical system
  • Constructed of 16-gauge bonded wire
  • Comes with dust cap for 4-way flat connector


Specs:

  • Maximum amperage:
    • Stop/turn lights: 4.2 amps per circuit
    • Tail lights: 7.5 amps per circuit
  • 1-Year limited warranty


Installation

This custom-fit T-One 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.


Tail light diagram

Once you've plugged in the T-connector, run the hot lead up to your car battery. Connect the lead to the included fuse holder, and then connect the fuse holder to the positive terminal on your battery and insert the provided fuse.


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.


Modulite Powered Tail Light Converter

A ModuLite power module is built into this T-One connector. Because your vehicle runs on a multiplex wiring system, the wiring needs to be converted to be compatible with the wiring system of your trailer. This power module functions as a tail light converter to combine the brake and turn signal functions of your automobile so that they run on one wire to properly activate your trailer's tail lights. Note: This will not affect how the tail lights on your vehicle operate.


With a ModuLite, your trailer's lights will be powered without overloading your vehicle's electrical system. Because the module draws power directly from your car's battery and bypasses the electrical routes that are used by a basic wiring harness, there is virtually no draw on your tail light circuits.



118750 Tekonsha T-1 T-Connector - 4 Wire - Modu-Lite Converter Included

Installation Details 118750 Installation instructions

This Product Fits The Following Vehicles



California residents: click here



Customer Reviews

T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - 118750

Average Customer Rating:  4.8 out of 5 stars   (39 Customer Reviews)

Quickly and easily install a 4-way trailer connector on your vehicle with this custom wiring harness. T-One connector plugs directly into existing wiring. Powered ModuLite reduces strain on wiring system.

- 118750
by:
2018 Chevrolet Equinox

I was told by a hitch installer that the hitch I was looking for would not be available for 3-4 weeks. I found the hitch on etrailer.com. ln three days the hitch was on my porch, along with the wiring harness. Had it installed the next day. Very pleased with the service. The information shown on the site and the videos were very helpful. Will definitly be back and will recommend etrailer.com to my friends! 540298



- 118750
by:
Chevrolet Equinox

Chevrolet used different electrical connectors on different configurations of the same vehicle, such as on the Equinox, they used different wiring connectors on the LS, LT and Premier and whether or not the vehicle was delivered with a hitch, or not, and some had a built in wiring connector for subsequent trailer wiring, or not, and diesel powered units may or may not. Obviously this is confusing and I ordered the wrong kit for my application. I have a diesel LT. etrailer communicated extremely well and we solved the problem quickly, exchanging the first kit with the correct one. Great people. I thank Carol and Odelia 630896



- 118750
by:

The hitch works well, but the instructions could be more simplified. It took several hours to get the hitch put on by myself correctly. We use it for towing our boat, and our four wheeler. 569685



- 118750
by:
Chevrolet Equinox

I purchased the trailer hitch & wiring harness for my 2020 Chevy Equinox, deliver was fast, all parts that were needed were included, couldn’t ask for it to go any smoother 721372



- 118750
by:

In the past I had always spliced-in the wires when installing wiring for a trailer hitch on a vehicle, but never again after seeing how simple this kit makes the job. With weather proof connectors that snap together, it will be much more reliable than the old splice method. And, it is impossible to wire it incorrectly, which could happen when you're looking for the right wire to splice into (or so I've heard). 720864



- 118750
by:

Ordered the part by phone on Wednesday and received it in the mail Friday morning. Great response time! 883851



- 118750
by:

874962



- 118750
by:

Feeding the wire to the battery was time consuming. 874065



- 118750
by:

Delivery was fast however box is pretty beaten up. Have to wait to get it opened to make sure it’s all there 872937



- 118750
by:

The video with step-by-step instructions worked out perfectly with no hiccups everything was as described in the description before purchase and installing the hitch and wiring harness was very easy and done in a timely manner highly recommended! 882412



- 118750
by: 08/21/2020

Perfect Fit, no issues 865802



- 118750
by: 08/13/2020

861535



- 118750
by:

Easy install Works well Have had no issues 849476



- 118750
by:

Used Utube to better install, but product is great! 831401



- 118750
by:

Etrailer is a great company. Always my first choice for trailer parts. I installed the wire harness using etrailer video guide without major issues. I used more tie wraps but that's just me. After a year and a about 8000 miles with my trailer the harness works without any problem. Vehicle is Chevy Equinox 2019 LT. 830166



- 118750
by:

Excellent system, made installation very easy. Etrailer. Com shipped it out very fast 828511



- 118750
by:

Easy to install, shipped quick 800689



- 118750
by:

Wiring harness fit my vehicle perfectly with simple plug in installation and performs as expected every time I need to tow a trailer. 794963



- 118750
by:

Easy install of wiring harness and hitch even for an old 64 yr old woman like me. Thanks 791273



- 118750
by:

1. The installation was awesome and flawless with help from your excellent video. 2. It has been operating great. Thanks very much. 778388



- 118750
by:

Product went together very well. Instructions were easy to follow and after a year it’s working trouble free! 777358



- 118750
by:
2019 Chevrolet Equinox

I put this on a 2019 equinox it works great but did take me about 2 hours to get it wired thru the car to were it wouldn't be pinched by anything. But it works great. 774495



- 118750
by:

Ordered a trailer hitch and wiring harness based on product is numbers provided by draw-tite. Product arrived in time frame described and was exactly what I had ordered. It' s been installed on the vehicle, the price was right and the free shipping topped it off. Would order from them again!! 770471



- 118750
by:

I am a return customer and I am extremely happy with the service you provide. Ordered on the 9th of March and received on the 10 the. No extra shipping costs involved. Thank you and I will be back. 764899



- 118750
by:

Dealing with Wayne H. made my transaction a positive experience. The order was placed and delivered as promised. They have other products that I will continue to buy. Once again, Thank you Wayne ( Tell your boss you deserve a raise ) 748747


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Show More Reviews

Ask the Experts about this Tekonsha Custom Fit Vehicle Wiring

  • Running Battery Lead Wire for Tekonsha Trailer Wiring that Fits 2020 Chevy Equinox
    When we've installed the Tekonsha trailer wiring kit that fits your 2020 Equinox part # 118750 we always ran the power wire up to the battery underneath it since that's an easier solution and when done properly is just as reliable/safe as running it through the interior. Other benefits is that it didn't require finding or drilling a hole in the firewall of the vehicle. I attached an install video that covers exactly the route we took with the wire on a 2019 Equinox just like yours. The...
    view full answer...
  • Trailer Wiring Recommendation for 2020 Chevy Equinox
    For your 2020 Chevy Equinox the trailer wiring install kit I recommend is the Tekonsha # 118750 because of how easy it is to install and how reliable it is. Of the options available this kit has the most reliable converter box which means it will last you a long time. I attached a link to an install video for this for you to check out as well.
    view full answer...
  • Which Trailer Wiring Harness is Correct for a 2018 Chevrolet Equinox LT
    If you do not have the factory tow package on your 2018 Chevrolet Equinox LT then the correct trailer wiring harness for you is the T-One Vehicle Wiring Harness part # 118750, not the T-One Vehicle Wiring Harness part # 118285. The T-One Vehicle Wiring Harness part # 118285 is only for model equipped with the factory tow package. There will still be a plug for the latter harness but if you do not have the factory tow package then the circuits may not all be ran to the power distribution...
    view full answer...
  • Does Trailer Wiring for 2018 Chevy Equinox Need to Run to Vehicle Battery
    Not all vehicles can handle the additional amperage draw of the trailer taillights on the vehicle taillight circuits. Those vehicles need setup that draws power from the battery. Some vehicles have higher rated circuits that can handle this, and others like your 2018 Chevy Equinox need to have the power drawn straight from the battery to protect the taillight circuits. We are aware that some people will ultimately run the power wire somewhere like you mentioned either out of ignorance...
    view full answer...
  • Can a 7-Way Trailer Connector Be Installed On a 2018 Chevy Equinox
    I actually do have everything needed to install a 7-way trailer connector on a 2018 Chevrolet Equinox although there is not a direct plug-in-play option. That said, all you need is a 4-way first, the T-One Vehicle Wiring Harness part # 118750 if no tow package or part # 118285 if you do. Then, you can convert this into a 7-way with the 7-Way RV Upgrade Kit for Trailer Brake Controller Installation part # ETBC7L which can be used with the Curt Echo Wireless Trailer Brake Controller part...
    view full answer...
  • Troubleshooting Tekonsha T-One Wiring Harness on 2018 Chevy Equinox
    The T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118750 for your 2018 Chevy Equinox has a 1 year manufacturer warranty. Because it seems to work part of the time, it sounds like there is a connection issue. I recommend starting with the ground wire with the ring terminal. Make sure the area it is connected to is free of debris and has a bare metal to metal connection. Next, check each of the connectors to ensure a solid fit without any bent pins. If all that...
    view full answer...
  • Which Trailer Wiring Harness for 2020 Chevy Equinox
    The wiring harness you meed will depend on whether or not you have the Premiers sub-model or not. For the Premier, you'd use # 118759 or # 118750 if it's not the Premier model. There's also a third less expensive possibility....if your Equinox has the factory tow package with the connector behind the bumper on the driver's side (see provided photo), you could use # 118285. The # 118494 you'd looked at is for an earlier model Equinox, and wouldn't work on your 2020 model.
    view full answer...
  • Recommended Trailer Hitch and Trailer Wiring Harness for 2020 Chevy Equinox
    Given that you have a brand-new vehicle, I'm going to suggest you go with a hitch that's mostly concealed except for the receiver tube. I'd go with the Draw-Tite Class III hitch, part # 76419. This hitch is compatible with all models but the Diesel, so if you have a Diesel model, use the # 76217. The Curt # C13307 hitch you had looked at would certainly work, but the entire crossbar would be visible below the rear vehicle bumper, which some folks don't care for. I've edited a photo...
    view full answer...
  • Recommended Trailer Wiring Harness for a 2019 Chevy Equinox
    The Draw-Tite Max-Frame # 76419 is an excellent trailer hitch for your 2019 Chevy Equinox! For wiring there are a few different options depending on what exactly you have but I do recommend going with a Tekonsha T-One wiring harness as we have found that they have the most reliable trailer wiring out there. If you have the tow package on your Equinox then you need the T-One # 118285. If you don't have the tow package then you need the T-One # 118759 for the Premier or the T-One # 118750...
    view full answer...
  • Recommended Trailer Hitch and Wiring for 2018 Chevy Equinox
    There are indeed two Class III trailer hitches available that are confirmed to fit your 2018 Chevy Equinox (as long as you don't have the Diesel model). Both the Curt # C13307 and the Draw-Tite # 76419 will have very similar installation processes, as you noted, and will provide you with a 2 inch receiver opening. Between the two models, I recommend going with the Draw-Tite Class III # 76419 for a couple of reasons. First, the Draw-Tite hitch actually features a higher towing weight...
    view full answer...
  • Does the Exhaust Need to Be Lowered to Install the etrailer # e98904 on a 2020 Chevrolet Equinox?
    No! You're in luck! The installation of the etrailer # e98904 hitch receiver does not require that you remove any bumper fascia or lower the exhaust in order to install this on your 2020 Chevrolet Equinox. This hitch provides the best ground clearance of any of the compatible hitches for this vehicle, so you won't have to worry about scratching it up or damaging it when going in and out of un-level driveways or over speed bumps. If you're going to be towing with your new trailer hitch,...
    view full answer...
  • Recommended Trailer Wiring Harness for 2018 Chevy Equinox
    Since you have the wiring connector, you most likely have at least the wiring portion of the tow package and can use the T-One Vehicle Wiring Harness for Factory Tow Package # 118285 which includes the relays. The models without that wire harness connect in a different location completely using # 118750 which connects behind the driver and passenger side tail lights. These harnesses will mount below your vehicle, so I recommend using a mounting bracket like # 18144 and # 18140 to secure...
    view full answer...
  • Does Exhaust Need Lowering to Install etrailer.com Class III e98904 Hitch on 2020 Chevy Equinox
    According to the instructions, the exhaust does NOT need to be dropped to install the etrailer # e98904 hitch on a 2020 Equinox.If you look at the install video I've linked, you can see a similar hitch being installed, the procedure would be the same with the # e98904 on your Equinox. This hitch fits all models except for the Diesel. If you have a Diesel, you'd want to use the Draw-Tite # 76217. This hitch wouldn't require the exhaust to be lowered either, but because of the DEF tank, the...
    view full answer...
  • Is there a Trailer Hitch for a 2018 Chevy Equinox that Fits in the Same Place as the Factory Hitch
    No, in this case the aftermarket hitches for the 2018 Chevy Equinox do not mirror the location of the factory hitch. Like you said the receiver on all the available options is below the rear fascia. The benefit though of an aftermarket hitch is that the hitch itself will be less than half the MSRP on the factory hitch and that does not include labor to have it installed if you choose to have the dealer install it. And the draw-back of the aftermarket hitches is limited ground clearance. If...
    view full answer...
  • Trailer Wiring Options for Towing a Trailer with a 2018 Chevy Equinox
    We do have trailer wiring kits available for your 2018 Chevy Equinox! If you have the Premier model then you need part # 118759 but if you don't have the Premier then you need part # 118750 instead. Both of these tee into the connectors behind your tail lights and draw power via the black wire that gets routed to your vehicle battery. This helps to protect the wiring on your Equinox in the event that something goes wrong with your trailer wiring so that it doesn't backfeed to your Equinox. I...
    view full answer...
  • How to Tell if you Have the Factory Towing Package 2018 Chevrolet Equinox
    I do have a few items you can look for that will give you an idea as to whether or not your 2018 Chevrolet Equinox came equipped with the factory tow package (K5L) or not but the only sure fire way to tell would be to obtain your VIN and contact the dealer as they would be able to confirm if your vehicle came equipped with the factory tow package. From my research, the factory towing package on your 2018 Chevrolet Equinox came with a transmission and engine oil cooler. Therefore, if...
    view full answer...
  • Hitch and Wiring Kit for 2019 Chevy Equinox Diesel
    Yes, the Draw-Tite 2-inch hitch # 76217 has been confirmed by Draw-Tite's tech team to be a fit on your 2019 Chevy Equinox diesel. The install instructions are linked and these will give you a list of the specific tools needed to bolt this hitch on with the included hardware kit. A helpful article is included too. If you also need a wiring harness you can use the 4-pole wiring kit # 118750. I confirmed compatibility of this wiring kit as well.
    view full answer...
  • Trailer Hitch for 2018 Chevy Equinox With Gas Engine
    There is a trailer hitch available for your 2018 Chevy Equinox but the Draw-Tite # 76217 will NOT fit unless you have a diesel engine. For your '18 Equinox I recommend checking out the Draw-Tite # 76419 which fits directly below your bumper; you can check out how it will look in the accompanying photo. This hitch will give you approximately 9 inches of clearance from the ground to the bottom of the receiver. For wiring which will give you a 4-way connector and allow you to power your...
    view full answer...
  • Trailer Wiring Recommendation for 2020 Chevy Equinox
    We have three options for trailer wiring that I would recommend for your 2020 Chevy Equinox. If you have the tow package already you'd want the part # 118285 which easily installs to the vehicle's factory wiring (see install video). If you do not have the tow package you'd want then the # 118759 for if you have a Premier model or part # 118750 if you do not have a Premier model.
    view full answer...
  • Could 2019 Chevy Equinox be Used to Transport 500 Motorcycle
    I did some checking and it looks like your 2019 Chevy Equinox could have a towing capacity of between 1,500 and 3,500 lbs which means your tongue weight capacity would be between 150 and 350 lbs. The hitches we offer have a higher tongue capacity than your vehicle which means you'd be limited by the vehicle since it's lowest rated component in setup. There wouldn't be a way to transport a 500 lb motorcycle with your vehicle unless you did so with a small trailer. You'd need trailer wiring...
    view full answer...
  • Is There a 1-1/4" Hitch for a 2020 Chevrolet Equinox
    There is a 1-1/4" Class II receiver that fits on the 2020 Chevy Equinox with the Draw-Tite # 36642. This hitch has the 1-1/4 receiver that you're looking for. If you're going to be towing anything with your Equinox you may need a few other items to complete your towing setup. If you don't already have a wiring harness for a 4 way trailer connection, you'll want to use the Tekonsha T-one # 118750 (for models excluding the Premier), which tees into your vehicle's electrical system with...
    view full answer...
  • Trailer Hitch Recommendation for 2018 Chevy Equinox Diesel
    Yes, we have the Draw Tite trailer hitch part # 76217 which is a confirmed fit for the 2018 Chevy Equinox diesel and would be a great option. It's a Class III hitch with a 2 inch opening and plenty of towing capacity. For trailer wiring you'd then want the # 118750 which is a custom fit and our most reliable option. Check out the install video I attached for this kit down below as well. If you wanted to do some towing you might be interested in etrailer ball mount kit # 989900. It...
    view full answer...
  • Trailer Hitch Fit for 2019 Chevy Equinox Diesel
    For a 2019 Chevy Equinox Diesel the trailer hitch you need is the Draw-Tite Trailer Hitch # 76217, which is a Class III hitch with a 2" receiver, 4,500 lb towing capacity and 675 lb tongue weight capacity. The hitch you referenced, part # 76419, is not a fit for a Diesel because it would interfere with the urea tank. The instructions are linked for you to check out so you can see how Trailer Hitch # 76217 will install in your Diesel Equinox. To add trailer wiring to your '19 Equinox,...
    view full answer...
  • Recommended Trailer Hitch Receiver Compatible with 2018 Chevy Equinox
    The trailer hitch for your 2014 Chevy Equinox, will fit models from 2005 through 2017. 2018 models had a different frame, so I recommend the Draw-Tite Max-Frame Trailer Hitch Receiver - Custom Fit - Class III - 2" # 76419 or the 1-1/4 inch # 36642 which is a confirmed fit for the 2018 model year. For your wiring, I recommend # 118285 if you get the tow package or # 118750 if you don't have the tow package. I've linked some videos to assist. If you get the 1-1/4 inch receiver, you...
    view full answer...
  • Best Trailer Hitch and Wiring for 2020 Chevy Equinox
    The best trailer hitch for your 2020 Chevy Equinox is the Draw-Tite because of all the hitches that fit your Equinox it is the easiest to install, has the most capacity (4,500 lbs towing & 675 lbs tongue weight) and is the only hitch rated for use with a weight distribution system. The correct Draw-Tite hitch for your '20 Equinox is going to depend on if you have a Diesel engine or a non-Diesel engine: - Non-Diesel Engine: Draw-Tite Trailer Hitch Receiver # 76419 - Diesel Engine:...
    view full answer...
  • Correct Trailer Wiring Harness for 2018 Chevy Equinox without Factory Tow Package
    The correct custom trailer wiring harness for your 2018 Chevy Equinox without the factory tow package is the Tekonsha # 118750. This will plug right into the ports you found behind the tail lights on your Equinox to provide you with a 4-Way connector to power a trailer's signal lights. I have attached an image of the connectors on this harness so you can see how they match up to the image you attached. I have also included an installation video on your 2018 Equinox that you can use...
    view full answer...
  • Trailer Hitch for 2019 Chevy Equinox that Can Tow SeaDoo Trailer
    The Draw Tite hitch part # 76419 that you referenced does fit your 2019 Chevy Equinox and would work great for towing a jetski like your Seadoo. For trailer wiring you'd then want the part # 118750 which installs easily and is very reliable. I attached install videos for both for you to check out. I looked up the towing capacity of your vehicle and it appears to have a 1,500 lb trailer weight capacity which means it could easily tow an 800 lb trailer. Since you wanted to do some towing...
    view full answer...




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Info for this part was:

Edited by:
Lindsey S
Expert Research:
Jameson C
Video by:
Joshua S
Video by:
Jonathan Y
Video by:
Jacob H
Video Edited:
Jacob T
Video Edited:
Chris R
Installed by:
Cole B
Written by:
Alexander C
Test Fit:
Shane H
Test Fit:
Ryan G
Updated by:
Isabelle B

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