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  1. Custom Fit Vehicle Wiring
  2. CURT
  3. Custom Fit
  4. Trailer Hitch Wiring
  5. 4 Flat
  6. No Converter
Curt T-Connector Vehicle Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector

Curt T-Connector Vehicle Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector

Item # 56083
Our Price: $21.55
Custom Fit Vehicle Wiring

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Shipping Weight: 0.51 lbs
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CURT Trailer Hitch Wiring - 56083
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Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. Connector plugs directly into OEM tow package port - no cutting, splicing or tapping required. 1-800-940-8924 to order CURT custom fit vehicle wiring part number 56083 or order online at etrailer.com. Free expert support on all CURT products. Great prices and Fastest Shipping for Curt T-Connector Vehicle Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector. Custom Fit Vehicle Wiring reviews from real customers.
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  • Reviews (372)
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CURT Custom Fit Vehicle Wiring - 56083

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

Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. Connector plugs directly into OEM tow package port - no cutting, splicing or tapping required.


Features:

  • Provides a 4-way flat trailer connector at the back of your vehicle to power your trailer's signal lights
    • Designed for use with a factory tow package
    • Compatible with 5-pole, 6-pole and 7-pole adapters (sold separately)
  • Connects quickly and easily - no cutting or splicing of wires
    • Locate connection point behind rear bumper
    • Plug in connector
  • Comes with dust cap for 4-way flat connector
  • Limited 1-year warranty


Installation

This custom-fit T-connector plugs into your vehicle's factory tow package wiring harness, which is located behind the rear bumper, along the driver's-side frame rail.


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 plug on your automobile and the 4-pole connector itself - to help prevent corrosion.



56083 CURT T-Connector - OE Replacement 4-Flat

Installation Details 56083 Installation instructions

This Product Fits The Following Vehicles



California residents: click here


Customer Satisfaction Score:


Customer Reviews

Curt T-Connector Vehicle Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector - 56083

Average Customer Rating:  4.9 out of 5 stars   (372 Customer Reviews)

Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. Connector plugs directly into OEM tow package port - no cutting, splicing or tapping required.

by:

When it comes to quick, slick, and easy DIY relative to a trailer hitch wiring harness for trailer lights, this puppy is the ticket! I am not a very technically adept individual and so having the simplicity that this plug-and-play harness offers is HUGE!



by:

Took my local independent garage only 45~ minutes to Completely install and wire. The 6" cut of the underneath plastic is about 8"-12" depending on car FYI. Good assistance via phone and a perfect recommendation. Nice quality hitch! Wiring is plug and play!



by:

Easy Plug and play

David

4/22/2024

Lights working fine on Trailer Hitch Hauler. No issues.



by:
2015 Lexus RX 350

Shipping was prompt and extremely well packaged. I received timely updates on the progress of my order (which was much appreciated as I needed this an upcoming trip). Both the recommended hitch and wiring harness were a perfect fit. The installation video and PDF were informative and accurate, making the installation stress free and within the estimated timeframe. One hint: if working alone, a floor jack to support the hitch works as well as another set of hands.

This was my second order from E-trailer. Their products and support are excellent.



by:

Very happy with my etrailer purchase. The dealership wanted to charge $1,700.00 to install my hitch. Etrailer saved me significantly without any hassles. I was able to purchase and have my mechanic install a hitch for 1/3 of the dealership cost.



by:
Lexus

This was an easy installation. My Lexus has the built in towing package.



by:

Easy to install with on line videos to assist you. Very affordable compared to the car dealership



by:

The wiring worked out great! It was an exact fit for my car. This is really a great website with plenty of technical information for making a buying decision and plenty of videos to help support the installation process. After a year of you something zero problems.



by:
2017 Lexus RX 450h

fast service, correct parts!



by:
2017 Lexus RX 350

The video combined with actual product made this install easy. The connector was exactly where it should be, it plugged in and with the 5 ties, it went snuggly into place.



by:

Works great



by:

The trailer hitch is an excellent product, well made & easy to install. I give it a 5 star rating. The wiring harness also was good quality
and worked well.



by:

Easy plug in



by:
2010 Lexus RX 450h

Literally cannot get simpler to install than this. Luckily, my 2010 Lexus Rx450H was set up with the factory tow package (and luckily I kept the window sticker to verify that!), so once the trim panel below the bumper is removed, the electrical connection is on the driver's side frame rail, capped. Remove cap, plug in the wiring harness, zip tie to the cross bar of the hitch, you're done. Shipping was super fast--ordered on Wednesday 6-14-17, scheduled for arrival 6-19-17, arrived late morning 6-17-17. Thank you!

I'm using it to tow troop equipment and canoe trailers for my son's Boy Scout events.



by:
2015 Lexus RX 350

As easy as all the reviews said it would be. Took a little while to get new bolts started that replaced OE self-tapping bolts. But it all lined up and gave a professional finished look when completed. Now I'm ready to help my friend install the hitch on his wife's RX. Won't hesitate to recommend etrailer.com to all in the future.



by:

Simple plug and play installation.



by:

Great product, excellent support. Very easy install in 25 minutes. Install directions very good. Holes are slotted in hitch, would recommend starting all bolts leaving bolts loose, then center hitch by bumping with wooden block before tightening. Then torque to spec.



by:

Hitch fit perfectly and instructions were clear. It would be nice if there were a method for stowing the wiring harness connector out of sight.



by:

Fits perfectly ... installed in less than an hour with a second set of hands from my son. And the genesis that snapped right in to the prewired rx350 tow wiring package .... all at 1/3 of the price the Lexus dealer was going to charge !!



by:
2013 Lexus RX 350

Super easy to install especially if you have the tow prep package on your car. The bracket makes the look more professional.



by:
2019 Lexus RX 350

you guys did a great job. you got me exactly what i asked for and got it out quick. the trailer hitch is actually much better than i was expecting. it is very heavy duty and mounts to the vehicle with 6 bolts instead of just 4 bolts like other manufacturers hitches do. i can't wait to install it and tow something lol. once again thanks for the great job and nice product



by:

Excellent quality and perfect fit.



by:
2013 Lexus RX 350

All I can say is, thanks etrailer for having the right product for the Job!! Product as advertised! Installation was a breeze taking only 45 minutes. I did the installation without raising the vehicle up off the ground. As a side note, the Lexus dealer wanted over $700 for doing the same job, no surprise there..



by:

Super easy installation. Great guidance on parts that fit your tow vehicle.



by:
2018 Lexus RX 350

Fit perfectly on our Lexus RX 350 and there was plenty of length to allow you to route the wiring harness any way you choose. The video series etrailer puts together on how to install the time is wonderful and very helpful, especially for those who learn by watching someone do the install first.


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

  • Trailer Wiring Harness Options for a 2010 Lexus RX 350 All Wheel Drive
    The definitive way to determine if your 2010 Lexus RX 350 has a factory tow package would be to have a Lexus dealer run the VIN number. They will be able to tell you what options the vehicle has. You could also test the factory connection point for # 56083 or # 118252, see instructions, to see if there is power to the factory plug. However, it may show that it works because it is not under load (a trailer connected). But under load, if you do not have the complete tow package and use #...
    view full answer...
  • Recommended Trailer Hitch Receiver and Wiring for Towing With 2022 Lexus RX 350
    For towing with your 2022 Lexus RX 350 I recommend the Curt Trailer Hitch Receiver # C73DR. This is a custom-fit Class III hitch with a 2" receiver. It also has a concealed cross tube so only the receiver will be visible at the back of your vehicle. It has a maximum gross trailer weight of 3,500 lbs and tongue weight of 525 lbs for your towing needs. It can also be used with weight distribution and increase the gross trailer weight to 4000 lbs. For wiring, I recommend the Curt T-Connector...
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  • Correct Wiring Harness for 2013 Lexus FWD RX 350 w/ Tow Package
    Both will work fine actually, the Curt Harness part # 56083 has been confirmed to fit by Curt on your 2013 Lexus RX-350 and we had a customer try the # 118252 on a 2013 model and it worked for him as well. If you look at the grey connectors on both of the harnesses you will see that they are the exact same.
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  • Trailer Hitch Receiver Compatibility With Rear Lift Gate Kick Sensor On a 2022 Lexus RX 350 F-Sport
    The Draw-Tite Max-Frame Trailer Hitch Receiver # 75540 has been successfully installed on other 2022 Lexus RX 350 F-Sports with the kick sensor for the rear lift gate. Do note that the receiver tube will limit the range and function of the kick sensor and you may no longer be able to use the function. With the Hidden Hitch by Draw-Tite Trailer Hitch Receiver # DT58GR it allows you to remove the receiver tube when not needed. Since there will not be a receiver tube there is nothing to block...
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  • Availability of a Trailer Wiring Harness for a FWD 2010 Lexus RX 350
    Yes, we have seen this situation, from the research I have done the FWD model of the 2010 Lexus RX350 does not come with tow package wiring that can be utilized with the Curt # 56083 wiring, unless the vehicle has this wiring from the factory. So for the FWD vehicle this is a replacement part only. For your FWD model without the wiring harness from the factory, you will need the Tow Ready Custom Fit Vehicle Wiring, item # 118478, to set your vehicle up with a 4-Way trailer wiring connector....
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  • What is the Correct Trailer Wiring Harness for a 2010 Lexus RX350 without Factory Tow Package
    The Curt T-Connector Vehicle Wiring Harness with 4 Pole Connector, # 56083 is for the 2010 Lexus RX350 with a tow package, so it is not designed to work with models that do not have a tow package. According to the installation details linked below, some vehicles will need to be reprogrammed at a dealership to allow this wiring harness to work. This harness draws power and signals for the trailer lights from the vehicle wiring. Apart from connecting a trailer and testing the left/right...
    view full answer...
  • Trailer Wiring Harness Recommendation for a 2015 Lexus RX 350
    If you do not have the tow package on your 2015 Lexus RX 350 you would want the trailer wiring harness part # 119250KIT as it is a universal harness that can install on basically any vehicle.
    view full answer...
  • Does the Draw-Tite Hitch 75540 Fit the F-Sport Model of the 2019 Lexus RX 350?
    Yes it does. Our website can be fun sometimes. I can confirm that the Draw-Tite Trailer Hitch item # 75540 does fit the 2019 Lexus RX 350 including the F Sport model. I have linked an installation video below so you can see how to get it set up. If you are planning on towing you will also need a wiring harness item # 56083 for the Lexus's with the factory tow package or item # 119250KIT for the vehicle's without the tow package and a ball mount kit item # C45534.
    view full answer...
  • Recommended Wiring Harness for 2015 Lexus RX350 Without Factory Tow Package
    The Curt T-Connector Vehicle Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector # 56083 is only a fit for a vehicle with the factory tow package. If you have the factory tow package, then you may have fuses that are missing or bad. The dealer should not need to do anything. If you don't have the factory tow package, then that harness will not work. You will instead want the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118255. This harness has...
    view full answer...
  • Recommended Trailer Hitch and Trailer Wiring Harness for 2015 Lexus RX350 w/ Factory Tow Package
    The Curt Class III hitch, part # C13143 would be an excellent choice for towing a smaller trailer. Since your vehicle has the trailer tow package, you'll also need the # 56083 wiring harness. For a ball mount, you'd need a # 2753 ball mount and a # 19260 trailer ball for a 1-7/8 or # 40038 for a 2 inch ball. You can uses the provided link to see current pricing, and add the items to a shopping cart in input your zip code to see the available shipping rates and methods. We currently offer...
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  • Trailer Wiring that Fits 2023 Lexus RX 350
    For your 2023 Lexus RX 350 we have the # 119190KIT for if you do not have the tow package (this is a universal style wiring kit), or we have the # 56083 for if the vehicle does have the factory tow package. This plugs in easily and does not require any splicing unlike the # 119190KIT.
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  • Curt Trailer Hitch Recommendation for a 2016 Lexus RX350 F Sport
    We checked with Curt and the Curt hitch part # C13272 does not have any fit exclusions for Sport models so it would fit your 2016 Lexus RX 350 Sport and work well. Because of that we would recommend it for you. If you wanted to do some towing you might be interested in etrailer ball mount kit # 989900. It comes with 2 ball mounts; one with a 3/4 inch rise or 2 inch drop and one with a 2-3/4 inch rise or 4 inch drop. It also includes a 1-7/8 inch ball, 2 inch ball, hitch pin with clip,...
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  • Best Trailer Hitch Recommendation for a 2013 Lexus RX 350
    All of the hitches available for your 2013 Lexus RX 350 are pretty similar. The biggest difference is that the Curt Hitch part # C13143 can fit the F Sport and non-F Sport models. Because of that I would recommend the Curt hitch. The trailer wiring available for your vehicle, part # 56083, is only available for the models of the vehicle that have the factory tow package. Without the factory tow package use # 118255. I attached videos for you to check out as well.
    view full answer...
  • Trailer Hitch Recommendation for a 2013 Lexus RX350 F Sport
    Yes, we checked with Curt and their trailer hitch part # C13143 that you referenced has been confirmed as a fit for your 2013 Lexus RX 350 F Sport so it would be a great option for you. If you wanted to do some towing you might be interested in etrailer ball mount kit # 989900. It comes with 2 ball mounts; one with a 3/4 inch rise or 2 inch drop and one with a 2-3/4 inch rise or 4 inch drop. It also includes a 1-7/8 inch ball, 2 inch ball, hitch pin with clip, and a storage bag. If the...
    view full answer...
  • Trailer Hitch Recommendation for a 2016 Lexus RX 350 Sport
    I checked with Curt and the Curt hitch part # C13272 does not have any fit exclusions for Sport models so it would fit your 2016 Lexus RX 350 Sport and work well. If you wanted to do some towing you might be interested in etrailer ball mount kit # 989900. It comes with 2 ball mounts; one with a 3/4 inch rise or 2 inch drop and one with a 2-3/4 inch rise or 4 inch drop. It also includes a 1-7/8 inch ball, 2 inch ball, hitch pin with clip, and a storage bag. If the ball mount kit does not...
    view full answer...
  • No Power To Trailer Connector After Installing On 2016 Lexus RX 350
    I called my contact at Curt and asked about the installation of the wiring harness, part # 56083 on your RX 350. First you can call the dealership with the VIN and ask if it has a tow package. If so ask them where the fuses or relays may be. I did some research and was unable to find the relay or fuse location for towing. PTW2993. Turn on the headlights and use the turn signals to make sure you are getting a signal. If you do not show any power on that port, chances are the vehicle...
    view full answer...
  • Recommended Hitch for a 2020 Lexus RX350 F Sport
    The only hitch that will work with your 2020 Lexus RX350 F Sport is the Draw-Tite Trailer Hitch item # 75540. This hitch is custom fit and bolts to your Lexus with included hardware. This is a class III hitch with a 2" receiver. It has a 4,500 lbs towing capacity, and a 675 lbs maximum tongue weight. It is not rated to be used with a weight distribution system. I have linked an installation video below so you can see how to get this hitch set up. If you are planning on towing you will...
    view full answer...
  • Parts Needed to Add 7-Way and Brake Controller to 2017 Lexus RX 350
    You will need to start with a 4-way (if you do not have one). For that you would want the # 56083. From there you would need to convert the 4-way to a 7-way so that you can install the brake controller. For that you will want the Brake Controller Install Kit and 7-Way Adapter part # ETBC7. I attached installation instructions and an install video for this product as well. For a brake controller I would recommend the Prodigy P2 Brake Controller part # 90885. This is our best selling brake...
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  • Do You Have a Hitch for a 2021 Lexus RX 350 F-Sport?
    Yes, we do! The Hidden Hitch by Draw-Tite Hitch item # DT58GR you were looking at actually fits both the F-Sport and standard model of the 2021 Lexus RX 350. This hitch is custom fit and bolts to your Lexus with included hardware. I really like this hitch because the 2" receiver is detachable and the crossbar installs behind your rear bumper. This means you won't be able to see it when you're not towing or using the receiver for an accessory. If you are planning on towing you will also...
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  • Trailer Lights Not Working After Installing Wiring Harness on a 2015 Lexus RX 350
    First, the trailer wiring harness # 56083 is only a fit if your 2015 Lexus RX 350 came with the factory tow package. If it did not then that could be why it isn't working. Or, if it does have the factory tow package, it could be a missing fuse or relay which you could find in the under hood fuse panel or the in cab fuse panel.
    view full answer...
  • Wiring Harness for 2013 Lexus RX 350
    The Curt wiring harness # 56083 and the similar Tow Ready # 118252 are intended as replacement parts for the RX 350 that came from the factory with tow package wiring. Since yours does not have a factory hitch this means you will not likely find any connector under the rear bumper/along the frame rail to plug in one of these harnesses, but you can certainly check easily enough. If there is no tow package connector to match the grey one shown in the linked photo then you can visit your...
    view full answer...
    Image 1 for
  • Do You Have a Hitch for a 2022 Lexus RX 350 F-Sport?
    The Stealth Hitches Hidden Trailer Hitch Receiver w/ Towing Kit item # 391LXRX16T fits the 2016-2019 Lexus RX 350 Premium and Premium Plus models. The Draw-Tite item # 75540 is the only hitch that is confirmed to fit your 2022 Lexus RX 350 F-Sport. This hitch is custom fit and bolts directly to your RX350's frame with included hardware. If you need a wiring harness for controlling your trailer's lights you will want the Curt T-Connector Vehicle Wiring Harness for Factory Tow Package -...
    view full answer...
  • Curt Trailer Wiring for 2019 Lexus RX350 Tow Package
    Yes, since you were able to find the trailer wiring connector under the rear of your 2019 Lexus RX 350 that would indicate that it has the factory tow package and that the trailer wiring kits like the Curt part # 56083 would be the correct solution to add trailer wiring.
    view full answer...
  • No Lights On Trailer When Using Curt Wiring Harness # 56083 On 2010 Lexus RX350 Without Tow Package
    On your 2010 Lexus RX350 without a tow package, you would need to use Tow Ready Custom Fit Vehicle Wiring, # 118478. I have included a link to the installation details below. This harness includes a circuit protected converter and requires a direct connection to the battery. This connection to the battery virtually eliminates power draw from the vehicles taillights, which protects the sensitive wiring. The Curt T-Connector Vehicle Wiring Harness with 4 Pole Connector, part # 56083 is for...
    view full answer...


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