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  1. Custom Fit Vehicle Wiring
  2. CURT
  3. Custom Fit
  4. 4 Flat
  5. Trailer Hitch Wiring
  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 (373)
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CURT Custom Fit Vehicle Wiring - 56083

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

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   (373 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:

It worked great no problems at all!



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:

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:

Works great



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:

Easy plug in



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:

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:

Simple plug and play installation.



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:
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:

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:

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:
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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Show More Reviews

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

  • Trailer Wiring Harness for a 2013 Lexus RX 350
    There aren't any official trailer wiring harnesses for the 2013 Lexus RX 350 so I recommend using the ZCI harness # 119250KIT. The great part about this harness is that you will not have to splice into the vehicle wiring at all. The connectors on the harness clamp around the vehicle tail light wires and sense the current passing through them.
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  • Troubleshooting Lights Not Working After Curt T-Connector Vehicle Wiring Harness Installation
    The Curt T-Connector Vehicle Wiring Harness # 56083 is intended as a factory replacement harness for the 2017 Lexus RX 350 with the tow package. It sounds like you may not have the tow package, although you would still have the gray plug at the back. If you did not have a black converter box already plugged into this then you will need the T-One Vehicle Wiring Harness # 118255. In order to verify this you could use a circuit tester like the # PTW2993 to ensure that power is getting to...
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    I did a little research and found that the Curt # C13282 hitch is a confirmed fit for your 2017 Lexus RX450H. I have attached an install video for you. I like that the hitch is almost entirely hidden and keeps the back of your Lexus looking sleek. I have two hitches that are a confirmed fit for your 2015 Nissan Leaf. One is a Curt # C11396, 1.25" x 1.25" Class I hitch supporting up to 150 pounds tongue weight. (Check your vehicles limits as well.) The other is an EcoHitch # 306-X7221...
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  • Recommended Trailer Wiring Harness for 2022 Lexus RX 350 with Factory Tow Package
    The Curt T-Connector Vehicle Wiring Harness part # 56083 is correct for a 2022 Lexus RX 350 with factory tow package. It's a plug-in harness that does not require any splicing for installation. The plug you will need to locate to use this harness is located behind the rear bumper cover on the driver side. It provides a 4-way flat which is the most common type of connector and used on most trailers for this vehicle. I have attached an install video below on an earlier model but it will...
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  • 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 #...
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  • Curt T-Connector Vehicle Wiring Harness w/ 4 Pole Connector, part # 56083
    Yes, the Curt T-Connector Vehicle Wiring Harness with 4-Pole Connector, part # 56083, comes with installation instructions for your 2010 Lexus RX350. This wiring harness simply plugs into the factory connectors on your Lexus.
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  • How to Install T-Connector on 2010 Lexus RX350
    Part # 56083 is called a T-connector because it connects into wires that run between the tail-lights. The connection point on the vehicle will only work if your 2010 Lexus RX350 came with the factory tow-package.
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  • 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...
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  • Location Of Curt Wiring Harness Connections For a 2021 Lexus RX 350L Without Tow Package
    For the Curt T-Connector Vehicle Wiring Harness # C56217 on your 2021 Lexus RX 350L the connectors will be located in a different spot. The 10 pin connector should be located on the passenger side just below the taillight. The 4 pin connector will be underneath the drivers side bumper cover. It may require you to use the Curt T-Connector Vehicle Wiring Harness for Factory Tow Package # 56083 to make that connection. The video that I linked below will help you find the 4-pin connector.
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    Image 1 for Image 2 for Image 3 for
  • 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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  • Will Hidden Hitch by Draw-Tite Fit 2022 Lexus RX 350
    Yes, the Hidden Hitch by Draw-Tite Trailer Hitch Receiver # DT58GR will fit your 2022 Lexus RX 350. This has been confirmed from Draw-Tite to fit all 2022 models. What you saw came from before the hitch had been tested and confirmed to fit on your vehicle. If you plan on doing some towing, you will also want the # 56083 for wiring. If you need a ball mount, I recommend the etrailer Ball Mount Kit # 989900. This kit has two ball mounts, one with a 3/4" rise or 2" drop and the other with...
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  • Will Tekonsha 118255 Fit 2021 Lexus RX 350
    Yes, the Tekonsha 118255 will fit your 2021 Lexus RX 350. It sounds like you don't have the tow package, which is why this comes with the powered converter unlike the # 118252. The same is true with the Curt. The # 56083 is for vehicles with the factory tow package and the # C56217 with the powered converter is for those without.
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  • What Wiring Harness Will Fit A 2010 Lexus RX350 That Does Not Have The Factory Tow Package
    Since you do not have the factory tow package on your 2010 Lexus RX350 you will need to use the Tow Ready T-One Wiring Harness, part # 118478. This harness connects in-line with the running light, brake light and turn signal circuit, and will work great on your 2010 Lexus RX-350. The T-One wiring harness draws power directly from the vehicles battery via an in-line fuse so your electrical system is safe. Part # 118478 is designed this way to protect your electrical system. There would...
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  • Trailer Wiring Recommendation for 2015 Lexus RX 350
    Based on our experiences and what you listed as having in your 2015 Lexus RX 350 all you'd need for trailer wiring is the 4-way kit part # 56083 that you referenced and you'd be set. I attached an install video for thits for you to check out too but I believe you may have viewed it already. Since 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...
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  • Trailer Wiring Harness for a 2010 Lexus RX 350 without Factory Tow Package
    If you did not order the tow package for your 2010 Lexus RX 350, then you will need to use wiring harness # 118478. The connection point for the tow package harness may be present but there are other components and wiring that needs to be done to make it fully functional from the factory. You can always have a dealership run the VIN of the vehicle to determine what options it has. I have included a link to the installation details for the 118478 wiring harness for you to view. I have...
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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 Wiring Harness 56083 Not Working After Installation on a 2011 Lexus RX 350
    Did the dealer say it didn't need to be reprogrammed or that your 2011 Lexus RX 350 doesn't have the factory tow package? Because if it does not have the factory tow package then you would need to install a different wiring harness, # 118478. I have linked a video showing how it installs. If it does have the factory tow package then re-check the following fuses: Under the hood locations 43 and 44; Driver's side instrument panel fuse box location 22. If those are all good to go then you...
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  • Trailer Wiring Harness Installation Location on a 2010 Lexus RX 350 with Factory Tow Package
    The connection point for trailer wiring harness # 56083 is located behind the rear bumper, on the driver side. I have included a picture and a link to the instructions that show this for you. That connection point may be there even if the vehicle does not have the factory tow package. The easiest way to determine how the vehicle is equipped is to call a dealer service department and have them run the VIN through their system. They can tell you if you have the tow package or not. If you...
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  • Trailer Wiring Harness to Fit 2017 Lexus RX 450h
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  • Parts Needed to Install 7-Way and Brake Controller on 2018 Lexus RX 450h
    Hey Jeff, we can help install a 7-way on your 2018 Lexus RX 450h but you will have to start with a 4-way like the part # 56083 as there isn't a 7-way kit custom fit for your vehicle. So once you have the 4-way installed you would need to convert it to a 7-way with the part # 37185. Unless your trailer has brakes then you would also need a brake controller like the p2 part # 90885 and the 7-way adapter part # ETBC7 instead.
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  • No Power To Trailer Connector After Installing On 2016 Lexus RX 350
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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.
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  • No Power Using the Curt Vehicle Wiring Harness Part # 56083 on a 2010 Lexus RX 350
    The Curt T-Connector Vehicle Wiring Harness part # 56083 that you installed on your 2010 Lexus RX 350 will only work on models with the factory tow package. If you do not have the factory tow package then the correct harness for you would be the Curt T-Connector Vehicle Wiring Harness part # C55563. This option will attach directly to the battery for power as you can see in the attached install video. If you have called the dealer with your VIN and confirmed that you do indeed have the...
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  • Curt Trailer Wiring Harness Not Working W/ A 2020 Lexus RX 350 Without OEM Towing Package
    I went ahead and did some investigating and it turns out that the reason your Curt T-Connector Vehicle Wiring Harness for Factory Tow Package # 56083 is not working is due to the fact that you do not have the factory towing package. Instead, you're going to want to use the Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # C56217, as # 56083 was designed to be used with vehicles that have the factory towing package. This would be the workaround to taking your...
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