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  1. Custom Fit Vehicle Wiring
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  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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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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Show More Reviews

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

  • Can The Bumper Fascia On a 2022 Lexus RX 350 Be Trimmed With a Razor Blade?
    It is very difficult and dangerous to try to trim the fascia on your 2022 Lexus RX 350 using a razor blade when you install the Draw-Tite Max-Frame Trailer Hitch Receiver # 75540. Since you have to trim the rear fascia as well as a couple panels under your Lexus to install the receiver you have a couple options. First you can take your Lexus to a service center before you install the receiver to have the panels trimmed per the manufacturer instructions that are linked below. You can also...
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  • Will the Curt Trailer Wiring Harness 56083 Fit a 2016 Lexus RX 350 without Tow Package
    If you tested the port on your 2016 Lexus RX 350 for trailer wiring and the pins have voltage then the Curt Harness part # 56083 will fit and work well. We have found that there are several vehicles that even if they do not have the tow package the wiring is still ran and functional. I attached an install video for this harness for you to check out as well.
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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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  • Recommended 4-Way and 7-Way Wiring Harness for a 2019 Lexus RX 350L Using a Curt Echo
    To add a 4-way and 7-way connector to your 2019 Lexus RX 350L you are going to need two separate wiring harnesses as there isn't one available that can do both. There are no custom fit 7-way harnesses either so this is by far the best and only option. The first harness you will need is the Curt T-Connector Vehicle Wiring Harness for Factory Tow Package item # 56083. The custom-fit T-connector plugs into your Lexus's factory tow package wiring harness, which is located behind the rear...
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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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  • Troubleshooting Installation of Curt T-Connector Vehicle Wiring Harness # 56083 on 2012 Lexus RX 350
    It sounds to me like your 2012 Lexus RX 350 may not be equipped with an active tow package. The plug may be there but the necessary connections may be missing. I recommend checking with your local Lexus dealer to determine what is needed to activate the towing package. Another option would be to go with the T-One Vehicle Wiring Harness, # 118478. The T-One connector plugs directly into the existing wiring at the back of your taillights. Just make your ground connection, route the power...
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  • Troubleshooting Installation of Curt T-Connector Vehicle Wiring Harness on 2012 Lexus RX 350
    One possibility is that your 2012 Lexus RX 350 may not be equipped with an active tow package. The plug may be there but the necessary connections may be missing. I recommend checking with your local Lexus dealer to determine what is needed to activate the towing package. Some vehicles will need to be reprogrammed at a dealership to allow this wiring harness to work.
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  • What Plug-And-Play 4-Way Harness Fits My 2022 Lexus RX350 with Factory Tow Package?
    For a plug-and-play harness for your 2022 Lexus RX 350, that is the Curt T-Connector Vehicle Wiring Harness for Factory Tow Package # 56083. This connector plugs directly into OEM tow package port. If you need a 7-way harness in addition to the 4-way, I recommend the Universal Installation Kit - 7-Way # ETBC7. With this particular harness, you will need to splice into the wiring already installed. We unfortunately do not carry a plug-in option for a 7-way for your 2022 Lexus RX 350.
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    I have a great hitch for your 2022 Lexus RX 350 F Sport, however the Curt item # C13272 does not fit. Instead you will want the Draw-Tite Trailer Hitch Receiver item # 75540. This hitch is custom fit and bolts directly to your Lexus with included hardware. I have taken a look at the instructions and linked them below it does not look like there is any trimming or modification to your Lexus required. To tow with this hitch you will need a wiring harness item # 56083 and a ball mount...
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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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  • Installing Tow Ready Mounting Bracket with Curt T-Connector Wiring Harness and 4-Pole Flat Connector
    When using the Tow Ready Mounting Bracket # 18144 to mount the 4-way trailer connector from the Curt T-Connector Vehicle Wiring Harness # 56083, you should not have to cut the harness in any way. After installing the mounting bracket, you will simply route the 4-way through the bracket opening and input the cap on the end of the connector. The opening on the bracket is 1-3/8 inches in length horizontally. You can use the bracket along with the short bracket # 18140 for a no drill application....
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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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  • Location of Trailer Tow Package Connector on 2015 Lexus RX350
    The connector that the Curt # 56083 trailer wiring harness plugs into is located right behind the bumper on the driver's side rear corner of the vehicle as shown in the linked video and in the provided photo. There might be a underside cover that needs to be removed to access the connector as shown in the video.
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  • Trailer Hitch that Fits 2022 Lexus RX 350L
    Yes, for your 2022 Lexus RX 350 L we have the Curt trailer hitch part # C13394 as a confirmed fit as long as your Lexus does not have dual exhaust. If you needed trailer wiring too the Curt part # 56083 is a confirmed fit too.
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  • 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...
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  • Hitch And Wiring Harness Recommendation For My 2022 Lexus RX 350
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  • Correct Trailer Wiring For My 2010 Lexus RX350 With Factory Tow Package
    There is a possibility of 2 different problems. The first is that if you have the front wheel drive model RX350 and the factory tow package, then the Curt Custom Fit Vehicle Wiring, part # 56083 is not compatible with your 2010 Lexus RX350. The other possibility is that the plug that you found on your 2010 Lexus RX350 still has the protective cover on the plug. If this is the case, you will just need to remove the protective cover and part # 56083 will plug right in. If you have a front...
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  • Trailer Hitch and Wiring Needed for 2018 Lexus RX 350 with Tow Package
    I'm not sure what the difference would be between having a tow package vs having an active tow package save that in some models you might need some fuses or relays to make the tow package active. For your 2018 Lexus RX 350 it will either come with the tow package or without the tow package. Since yours came with the tow package that lets me know what wiring kit will work. I recommend going with the Curt Trailer Hitch # C13272 and wiring # 56083 with the ball mount kit # 989900 if you don't...
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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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  • Recommended Trailer Hitch for a 2022 Lexus RX 350
    Yes, the Draw-Tite Trailer Hitch item # DT58GR does fit the 2022 Lexus RX350s. This hitch is custom fit and bolts directly to your RX 350 with included hardware. I have linked a picture and an installation video below so you can follow along with the process and see what the final look will be. If you need a wiring harness you will Curt T-Connector Vehicle Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector item # 56083. This custom-fit T-connector plugs into your vehicle's...
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  • Best 4-Pole Wiring Harness for 2018 Lexus RX 350 with Factory Towing Package
    The 2018 Lexus RX 350 with the factory tow package wiring prep will have a connection point designed to match the plug on parts # 118252, # 56083 and # HM11141945. Each of these three similar items will work with the factory tow package that has a square connector to mate with the one shown in the included photo. Of these three products I recommend the Tekonsha # 118252 because we find their electrical items to be the most reliable of all those we offer. Please refer to the included installation...
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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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  • 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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  • Installation Differences Among Available Trailer Hitches for a 2011 Lexus RX350
    According to the instructions for CURT Trailer Hitch, # C13143 installation, lowering the exhaust is optional if you have a hard time getting the hitch into position (see page 7 in the instructions I have linked). The CURT hitch is shaped in such away that on the passenger side, you may be able to maneuver the hitch up and around the muffler to get it in position. The other hitches have a different shape and will more than likely require lowering the exhaust and repositioning of the exhaust...
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