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

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

Item # 118763
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Custom Fit Vehicle Wiring

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T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector 4 Flat 118763
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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. 1-800-496-5010 to order Tekonsha custom fit vehicle wiring part number 118763 or order online at 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.
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  • Reviews (21)
  • Q & A (0)
  • Photos
  • Why etrailer?

Tekonsha Custom Fit Vehicle Wiring - 118763

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

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.


  • 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 in rear cargo area
    • 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
  • 1-Year limited warranty


This custom-fit T-One connector plugs into your vehicle's wiring harness, which is located in your rear cargo area. You will have to remove the trunk floor covering and rear cargo area cover to access this harness. 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 flat connector will be stowed in an out-of-the-way location within your cargo area.

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 most trailers run on a two-wire system - wherein the brake and turn signals are carried on one wire - the separate brake and turn signals from your vehicle's three-wire system need to be combined so they are 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.

118763 Tekonsha T-1 T-Connector - 4 Wire

Installation Details 118763 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 - 118763

Average Customer Rating:  4.6 out of 5 stars   (21 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.

2018 Toyota Camry

The wiring harness itself is a very nice product. Connectors fit perfectly with the Camry's connectors. The instruction sheet is something else. No mention of routing the battery power wire between the battery and the black box of the harness. The video is for a 2010 Camry, so the directions for routing this wire do not work for my 2018 Camry.

I checked and in the manual it talks about routing the power wire at step #7. This harness fits models 2018 - 2022 Toyota Camry and we do not currently have a video on an installation however we do have a FAQ on routing power wires that is very helpful.
-- Etrailer Expert Jenny N - 05/31/2022

2021 Toyota Camry

I got the hitch on ok. I had to buy a rotary file for my 3/8 drill to enlarge hole. The wiring I couldn't firgure out how to route the wire from battery to trunk. I made an appointment for garage to do that part.

You mentioned that it was tough to find a good path to route the power wire to the battery. I wanted to let you know that we do have a FAQ that would help.
-- Etrailer Expert Jenny N - 07/07/2022


The kit is great. You get just what is needed and everything fits perfectly. I have been using it for a year now. All the lights are checked for proper operation every time our trailer is hooked up and they have always worked. I am not only very satisfied with the product, but eTrailer's staff as well. They're friendly, helpful, and their service can't be beat! Thanks to them all!


Paul was helpful and understanding.

2018 Toyota Camry

Ordered T-one wire harness connections for my 18 Camry. Easy to install and worked properly. Very satisfied.


Everything works great as should. I'm happy to buy products from you because it's never fails. It's not my first one that I like. Thanks

2018 Toyota Camry

Very easy install. No need to cut into the car's wiring given the 4 compatible taillight connectors provided. The battery on my 2018 Toyota Camry Hybrid is in the trunk, so all the wiring was contained in the trunk. The quiescent current is zero, so no drain on the battery. Very nice package!

After 1 year the trailer hitch has proven to be robust and stable. I installed it myself in my driveway. I put grease in the areas where holes were drilled and where there is metal to metal contact to prevent rust given salt is used here in winter. It should outlast the car!
David C - 07/23/2020


I would recommend it to a friend

2020 Toyota Camry

Everything worked right away with my 2020 Toyota Camry SE. Clean and easy installation. Tekonsha quality and reliability is the best in the trailer wiring harness business. I am completely satisfy with my purchase and now I can officially tow a small trailer with my Camry if needed thanks to Tekonsha.


This wiring kit was easy to install.


Delivery time sucks. I had to delay everything two weeks later


Fast shipping quick service.


everything fit perfectly the service I received was more than excellent this was my second hitch package I purchased from you folks and will more then likely not my last.


I’m no electrical/mechanical guru but even I had no problem with installing this kit and it has been working well for a year now.


Easy to install, works perfectly.

2019 Toyota Camry

This product was easy to pull up and review on your website. The cost was was much less than the installation shop. Your communication (emails) was prompt and precise.
Very pleased at this point


The staff pleasant, helpful, and very professional.
not have better assistance than I got from Michelle & Vicky


Easy to install



2018 Toyota Camry


See what our Experts say about this Tekonsha Custom Fit Vehicle Wiring

  • Trailer Wiring and Hitch that Fits 2020 Toyota Camry
    Since the 2020 Toyota Camry did not change from the 2019 models the Tekonsha trailer wiring harness # 118763 that you referenced will fit your 2020 Camry. The Draw Tite hitch part # 36643 is also a fit too and a solid choice.
    view full answer...
  • Trailer Wiring Harness Recommended for 2018 Toyota Camry
    In all honesty, due to the circuit protection a powered converter provides, that's really what you'll want to use. None of our hitch wiring manufacturers offer plug-and-play a non-powered option, so it's really a moot point. If you really want to go with a non-powered option, you could use a non-powered converter like # 119130 which you'd need to splice into the taillight circuits on your Camry. I'd recommend using the Tekonsha # 118763, which as mentioned above will isolate the vehicle's...
    view full answer...
  • Recommended Routing of Power Wire for Powered Taillight Converter Install on 2018 Toyota Camry
    I don't have a specific routing to recommend, but I do have some helpful guidelines for you. You'll want to avoid anything hot or moving, like steering, exhaust or suspension components. Some folks like to use wire loom, like part # 7509-10 (sold in 10-foot lengths) to protect the wire. Usually, the best practice is to find an existing wiring harness and follow that. Be sure to use plenty of zip ties to secure the wire. I've linked to a help article on the subject, which provides other...
    view full answer...
  • Does Tekonsha Trailer Wiring Kit 118763 Fit 2019 Toyota Camry Hybrid
    Yes, the Tekonsha trailer wiring kit part # 118763 that you referenced does work on the hybrid models of the 2019 Toyota Camry. If you needed a hitch too the # C11576 fits the hybrid models as well.
    view full answer...
  • Draw-Tite Trailer Hitch Compatible with 2018 Toyota Camry XSE with Dual Exhaust
    The Draw-Tite Trailer Hitch Receiver - Custom Fit - Class II - 1-1/4" # 36643 is a fit for 2018-2020 Toyota Camry models. It will fit your 2018 Toyota Camry XSE with dual exhaust. If you need trailer wiring, I recommend the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118763 and ball mount # 36071 with ball # 19258.
    view full answer...
  • Tip to Use Curt Trailer Wiring Kit C34FR on Hybrid Model
    We had one customer who moved some wires on their Curt # C34FR harness to allow it to work on the hybrid models of the vehicle. Here's what they tried that worked for them: "After a little investigation with a meter I noticed the wire for the right/left turn signals coming off the two pass thru connector sets did not line up with the wire connected to the blinker on the car. I cut and re-soldered the wire so on the right side/passenger side the tap off wire matched the car blinker wire...
    view full answer...
  • Trailer Wiring Harness for 2021 Toyota Camry LE Hybrid with Incandescent Taillights
    I spoke with my contact at Curt, and from what I understand they're working directly with you on this. They're wondering if your Camry might have been manufactured in Canada, the Curt 56417 which we sell as part # C34FR won't work correctly on Canadian manufactured vehicles. According to Tekonsha, the # 118763 is a fit for all models of the 2021 Camry. The Hopkins wiring harnesses you specified are for vehicles being flat towed behind a motorhome, not for towing a trailer so they wouldn't...
    view full answer...
  • What is Needed to Tow a Trailer with a 2018 Toyota Camry Hybrid
    We do get a lot of questions like this. It's exactly what we're here for. And also we do have the parts you need to tow a trailer with your 2018 Toyota Camry Hybrid. However, I also checked the online copy of your owner's manaul and it states that your vehicle is not rated to tow. I recommend verifying with your manual or talking to Toyota before towing to find out if you can tow a trailer, and how heavy it can be if you're able to tow. With that being said, if you determine your Camry...
    view full answer...
  • Recommended Trailer Hitch and Trailer Wiring for 2018 Toyota Camry
    The Draw-Tite Trailer Hitch Receiver part # 36643 is a great options for a 2018 Toyota Camry and what I recommend using. It has a class II rating with 1-1/4" receiver tube opening. It will work great for towing alongside a trailer wiring harness like the T-One Vehicle Wiring Harness part # 118763 which has the most common 4-way connector. In order to complete your setup, you'll need a few different items which I have listed below. Drawbar for 1-1/4" Hitch part # 36071 Convert-A-Ball...
    view full answer...
  • Trailer Hitch and Wiring for a 2018 Toyota Camry XSE
    I checked with Draw-Tite about trailer hitch # 36643 and they do say it is a fit for all styles of the 2018 Toyota Camry. We also have not had anyone complain that the hitch did not fit due to interference from the exhaust components. The recommended ball mount for this hitch is # 36071. For a 2 inch ball use # 19258 or if you need the smaller 1-7/8 inch ball it is # 19256. And for a trailer wiring harness you can use # 118763 to add a 4-Way flat connector to the rear of the vehicle.
    view full answer...
  • Parts Needed to Tow With 2018 Toyota Camry XSE
    You can add parts to your 2018 Toyota Camry XSE in order to tow and you will need to start with a trailer hitch and I recommend the Draw-Tite Trailer Hitch # 36643 due to the company's reputation for high-quality trailer hitches. This is a Class II hitch with a 1-1/4" receiver that has a 3,500 lb towing capacity and 350 lb tongue weight capacity. Adding a wiring harness will also be necessary in order to power the lights on your trailer and the T-One Vehicle Wiring Harness with 4-Pole...
    view full answer...
  • Enclosed Cargo Carrier and Trailer Hitch for 2021 Toyota Camry
    If you installed the Class II Draw Tite hitch part # 36643 on your 2021 Toyota Camry you'd be able to install and use the Thule Enclosed Combi Carrier # TH665C since it can fit the Class II hitches. This would be the only enclosed cargo carrier option out there but it's also a really great option loaded with features and plenty of cargo space. If you wanted the taillights to be active you'd need the Tekonsha 4-way kit too part # 118763 installed on your vehicle.
    view full answer...
  • Hitch for 2019 Toyota Camry to Tow Motorcycle Trailer with 565-lb Harley Davidson
    I'll start off by mentioning that from my research, it looks like the weight of the Stinger Folding motorcycle trailer you're looking at weighs in at around 220-lbs. When you add the 565-lb Harley to the trailer, you're looking at a total weight of a little less than 800-lbs. You'll want to consult your owner's manual for confirmation on the towing capacity of your 2019 Toyota Camry, but using the Curt # C12176 should allow you to tow that setup without any issues (I'm showing the towing...
    view full answer...
  • Trailer Hitch Fits for 2019 Toyota Camry XSE w/ Dual Exhaust
    According to Draw-Tite and Curt, both hitches we offer would be a fit for your 2019 Camry XSE w/ Dual Exhaust. Given that the installation prodcedure for both is pretty similar, I'd really have no preference between the two. Our customers seem just a tiny bit happier with the finish on Curt hitches, so if I was forced to lean one way or the other, that's where I'd go. The Curt hitch is part # C12176 and the Draw-Tite is # 36643. If you were planning on towing with your Camry, you'd need...
    view full answer...
  • Will Trailer Hitch from 2015 Toyota Camry Fit 2019 Model
    The good news is that we do indeed have a hitch that will fit your 2019 Toyota Camry, but unfortunately the 2015 and 2019 Camrys are different generations and the hitch from your older vehicle won't work on your 2019 model. For your 2019, I'd suggest going with the Draw-Tite class II, part # 36643 which fits all models. If you'll be doing some light duty towing with the hitch, you'll need a few other items to complete your towing system. For a wiring harness, use # 118763, # 36071 for...
    view full answer...
  • Trailer Hitch Receiver and Vehicle Wiring Harness For a 2018 Toyota Camry Hybrid.
    For your 2018 Toyota Camry Hybrid I recommend the Curt Trailer Hitch Receiver # C11576. This custom fit receiver will require some modification to your underbody panel and exhaust heat shield. It is a class I receiver that has a capacity up to 200lbs of tongue weight and 2,000lbs trailer towing, be sure to verify your Camry's limits with Toyota and do not exceed the lower of the numbers you get. The Curt Trailer Hitch Receiver # C13900 is designed to fit different vehicle, but your Camry...
    view full answer...
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  • Trailer Hitch Receiver and Wiring Harness Compatibility With a 2021 Toyota Camry XLE Hybrid
    We do have a receiver that is custom fit for your 2021 Toyota Camry XLE Hybrid as the Curt Trailer Hitch Receiver # C13900 is not going to fit your Camry. It is designed to fit multiple trucks, vans and SUV's that have a frame width of 31", 33-1/2", 35", 37-1/2", 39", and 41". The list of vehicles can be found on the instructions page which I have linked below. The Curt Trailer Hitch Receiver # C11576 is custom fit for your Camry and will work on your XLE hybrid trim. It will attach to...
    view full answer...
  • Recommended Trailer Hitch Receiver For Carrying 2" Bike Rack With a 2022 Toyota Camry Hybrid
    I recommend using the Hitch Adapter # HT5R with the Draw-Tite Trailer Hitch Receiver # 36643 on your 2022 Toyota Camry. This adapter has a 5" rise that will help you gain additional ground clearance for your bike rack to clear driveways and curbs. The adapter will reduce the weight rating by 50% lowering the receiver tongue weight from 350lbs to 175lbs. The T-One Vehicle Wiring Harness # 118763 will give you a 4-way connector. This can be used with small trailers you may tow and also...
    view full answer...
  • Draw-Tite Class II Trailer Hitch 36643 Fit on 2018 Toyota Camry
    Draw-Tite 1-1/4-inch Class II hitch # 36643 is a confirmed fit for the 2018 Toyota Camry and it also fits the hybrid version. In a separate email I have sent along the install instructions from Draw-Tite. Since we have this hitch in stock I went to our warehouse to measure it for you so you can determine the resulting ground clearance after installation. I measured from the top of the rear mounting brackets (that bolt to the bottoms of the frame rails) down to the bottom edge of the receiver...
    view full answer...
    Image 1 for
  • Recommended Hitch Receiver For 2021 Toyota Camry
    I suggest the Curt Trailer Hitch Receiver, # C11576 that fits all trim levels of the 2021 Toyota Camry. This hitch has is a 1-1/4" x 1-1/4" receiver with 200lb tongue weight rating and a 2000lb trailer weight rating. This is a great option for carrying a bike rack or a cargo carrier. I have added a link to an installation video of this hitch being installed on a 2020 model. If you need a great bike rack for your Toyota Camry, I suggest the RockyMounts MonoRail Solo Bike Rack for 2...
    view full answer...
  • Trailer Hitch and Wiring for a 2018 Toyota Camry XSE 2.5L
    Curt trailer hitch # C11576 is a fit for the 2018 Toyota Camry XSE but we do not have a picture showing it installed on that specific model. I have included a picture on an SE model from the instructions. I have also linked those instructions for you. The installation is not all that difficult it just takes some time to complete all the steps. If you plan on towing then the recommended ball mount is # C45521. For a 1-7/8 inch ball use # A-80. For a 2 inch ball use # A-82. And for trailer...
    view full answer...
    Image 1 for
  • Trailer Hitch, Wiring and Ball Mount for Towing with 2019 Toyota Camry
    The Curt hitch part # C11576 is a confirmed fit for your 2019 Toyota Camry but it does not come with wiring and a ball mount as not everyone uses hitches to tow with. So for wiring you'd want the part # 118763 for a custom fit kit that installs easily and is very reliable. For a ball mount you'd want the # C45521 and for hitch balls # A-82 for a 2 inch ball or part # A-80 for a 1-7/8 inch ball.
    view full answer...
  • Trailer Hitch Recommendation for 2019 Toyota Camry Hybrid
    The Curt Class II hitch part # C11576 is a confirmed fit for the 2019 Toyota Camry Hybrid models like what you have. We checked with Curt to verify this as a fit. You'll want to check your owners manual for any towing related capacities/restrictions. For trailer wiring you'd want the Tekonsha kit part # 118763 because it installs without requiring any hardwiring to your vehicle wiring and because it has our most reliable converter box. For a ball mount you'd want the part # C45521 and...
    view full answer...
  • Trailer Hitch Recommendation for 2019 Toyota Camry SE Sport
    For your 2019 Toyota Camry SE Sport the best hitch option is the Curt # C11576 as it is the most hidden option available since only the hitch opening hangs below the rear bumper. For trailer wiring then you'd want the part # 118763 for the most reliable and easiest install option. For a ball mount you'd then want the part # C45521 and for balls # A-80 for a 1-7/8 inch or # A-82 for a 2 inch ball.
    view full answer...
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Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Jameson C
Expert Research:
Jameson C
Employee Lindsey S
Edited by:
Lindsey S
Employee Cole B
Installed by:
Cole B
Employee Wilson B
Updated by:
Wilson B
Employee Alexander C
Written by:
Alexander C

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