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Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
CURT

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

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$45.44
Retail:$68.74
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Custom Fit Vehicle Wiring

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Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. Connectors plug directly into existing wiring. Powered converter reduces strain on wiring system and is made using SMT to ensure superior performance. 1-800-940-8924 to order CURT custom fit vehicle wiring part number C56217 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 with 4-Pole Flat Trailer Connector. Custom Fit Vehicle Wiring reviews from real customers.
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  • Reviews (1046)
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CURT Custom Fit Vehicle Wiring

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

Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. Connectors plug directly into existing wiring. Powered converter reduces strain on wiring system and is made using SMT to ensure superior performance.


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 - no cutting or splicing of wires
    • Tow harness with 4-way connector plugs into connection point in rear cargo area
  • Includes a tail light converter 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 using surface-mount technology (SMT) for consistent, reliable performance
    • Maximizes trailer light yield and intensity while producing minimal heat
    • Ensures superior operation in rough road conditions
  • Comes with dust cap for 4-way flat connector


Specs:

  • Maximum amperage:
    • Stop/turn lights: 3 amps per circuit
    • Tail lights: 6 amps per circuit
  • 1-Year limited warranty


Installation

This custom-fit T-connector plugs into your vehicle's wiring harness. The connection point for the 4-way tow harness is located behind the interior trim panel in your rear cargo area. Once you've plugged in the converter, insert the included 10-amp fuse into the integrated fuse holder.


Once installation is complete, the 4-way 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.


Powered Tail Light Converter with Surface-Mount Technology

A tail light converter is built into this T-connector. This converter is a circuit-protected, battery-powered unit that bypasses the electrical routes that are used by a basic wiring harness. As a result, there is virtually no draw on your tail light circuits.


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 the trailer. This converter combines 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.


Curt builds each tail light converter using surface-mount technology (SMT). This method of construction involves soldering electronic components directly to the surface of a printed circuit board. SMT eliminates the need for leads, which are used in older through-hole technology. The result is a circuit board that is smaller yet provides more routing area and that offers superior performance, reliability and durability.


Curt SMT Circuit Boards

Circuit boards constructed using SMT have been shown to perform better under rough conditions with excessive vibration than those made using the through-hole method. And where would vibration be more likely to occur than in towing applications? Curt converters also produce less heat, leading to increased durability and longer life. In addition, lower levels of resistance ensure better performance, especially for parts that operate at higher frequencies.


Each Curt circuit board is made using high-quality components that are pieced together in the most technologically savvy fashion, leading to greater predictability and reliability in functioning.



56217 CURT T-Connector - Surface Mount Technology - 4 Wire

Replaces 56034

Item # C56217

Installation Details C56217 Installation instructions

This Product Fits The Following Vehicles



California residents: click here


Customer Satisfaction Score:


Customer Reviews

Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - C56217

Average Customer Rating:  4.8 out of 5 stars   (1046 Customer Reviews)

Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. Connectors plug directly into existing wiring. Powered converter reduces strain on wiring system and is made using SMT to ensure superior performance.

by:
2018 Toyota Highlander

Out of all the etrailer hitches I have install for myself or my friends...this one was the easiest. They are all easy but this one was the cake! Love the quality and the fit. Can't beat the price either! I decided to run my 4 pin flat outside the SUV through a rubber grommet. Cleaner look to me. :)



by:

The website gave me the perfect fit for our Highlander. Shipping was fast and arrived on time. Installation was a breeze with the hitch and wiring harness. Great overall experience. FYI…I installed this entire system by myself in under an hour.

Joshua

6/12/2023

Works perfect

Etrailer Expert

Mike L.

9/6/2023

@Joshua Awesome, we're glad to hear that!


by:
2015 Toyota Highlander

With the help of the online instructional video and the fact that Toyota had
already included the required wiring and connectors, the wiring kit for trailer lighting was very easy to install. Thanks



by:
2014 Toyota Highlander

Installation was straightforward using the video that was on the Trailer website. The vehicle they used to the installation video was the same as my 2014 Highlander. I highly recommend this product.



by:
2019 Toyota Highlander

Installed with next to zero thought. etrailer anticipated exactly what I would need for my 2019 Highlander. Very little waste in terms of unused parts.



by:
2018 Toyota Highlander

Very easy installation. Commplete and detailed printed instructions. Online video made installation a snap. Thanks.



by:

The harness works well and installation went great. Thanks etrailer for such great installation resources and videos!



by:

Very easy to install the wiring. Video was a big help. Thanks to all for your assistance.



by:

Very easy plug and play install. Less than 15 min when using the video.



by:

Worked as advertised. Almost plug-n-pl ay

Steve

9/20/2024

I’ve used a number of times wo any issues.



by:
2016 Toyota Highlander

It fit perfectly and all the parts were in order. As always, I suggest Youtube backup installation videos to make the process super easy!



by:

This is my second order with etrailer. Both experiences with your company have been very positive. The knowledge and friendliness -along with following up on orders and satisfaction have been much appreciated. Brittany, the customer representative, is a huge asset to etrailer.



by:
2019 Toyota Highlander

I have a 2019 Highlander and the installation went very well. I bought the Drawtite hitch with the mounting bracket for my wiring plug, so I wanted my wires to go under the vehicle and not through the rear door. Once I removed the trays from the back of the vehicle, there was a rubber plug in the corner that could be removed that allowed access under the vehicle. I decided to use my box knife to cut a slit in the rubber plug. I had to cut my wiring harness across the 4 wires to run them through the rubber plug. I crimped them back together as seen in the photo. I used zip ties under the vehicle and inside the back to clean things up.

Etrailer Expert

Mike L.

1/28/2019

Nice job on the install! I would make one recommendation.. Id use some silicone to seal the hole in the grommet where the wire passes through to prevent moisture or exhaust gasses from entering the passenger cabin.



by:

Easy to install. Great instructions.



by:

Quality trailer wiring harness at a fair price with good pictorial install instructions.



by:

simple and quick to install, great vide os!!



by:

fairly easy to install, had for over a year now.Save big bucks DYI

Roy

7/19/2024

Worked perfect for my 2022 Lexus, no issues, easy instructions.



by:
2016 Toyota Highlander

Shipping was prompt. Arrival was without damage. Instructions were clear and easy to follow. Installation time was about an hour as the instructions predicted. The fit was perfect! The qualtiy seems good and the hitch looks good on my vehicle!

Tom D.

9/17/2018

Excellent..no problems!



by:
Pontiac Trans Sport Van

Have not installed the hitch yet. Will be used for a bike rack and for a cargo carrier to transport a surf fishing cart to the beach. Hitch is well made but rather heavy. The order came earlier than expected which I appreciated.



by:
2020 Lexus RX 350

does not fit for my vehicle application. had to go to u-haul to get the correct harness...



by:

Good install video. Easy peasy. Product looks good, reasonable price, good service, quick shipping



by:
2008 Toyota Highlander

This wiring harness fit my 2008 Toyota Highlander Sport perfectly! It's very easy to install, especially if you watch the installation tutorial video. It's literally plug and play. Everything you need comes with it, including the fuse and zip ties to hold everything in place. The only hard part for me was getting under the dash and tucking everything away neatly, but that's because I'm a big guy and there's not much room down there. I ran mine to the outside of the vehicle to the hitch and installed it in a mounting bracket instead of leaving the harness inside the car and pulling it out every time I need to use it. There was an extra hole that had a rubber plug in it near the tail light area where the connector for the harness is. I took the rubber plug out and ran the wiring to the hitch. I filled the hole with silicone caulking on the inside and outside to prevent any water from getting in. I also wrapped all of my connections with electrical tape. The four way has a dust cap to protect the pins from dirt and debris when not in use. I installed it on the hitch using the mounting bracket (item 18144) here: https://www.etrailer.com/p-18144.html . Looks great! I tested my connections and everything works perfectly! Great product, great price, and you save a ton of money on installation by doing it yourself! Thanks, etrailer.com, for the great tutorial and product research!



by:

Easy to install , and works great

William C.

7/13/2024

Very good and easy to install



by:

Good service, delivery and communication.
Connector
head was wider than the drain hole. Had to shave off edges.
Works well and would purchase again.



by:
2009 Toyota Highlander

Everything plugged in and worked well. The only reason it's not a 5 star review is because they didn't include the nut needed to secure the ground to the vehicle, and I unfortunately didn't have a nut that would work on-hand, so I had to waste an hour driving to the nearest hardware store to get an $0.18 nut that should have been included in the package.

If you're not sure what I'm referring to, in the video you'll see the ground wire typically connects to an existing bolt that sticks out under your dash. If you live far from a hardware store, you might first see if you have a nut on-hand that'll fit on that ground bolt, or put that on your list to buy the next time you're in town.


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1046
Show More Reviews

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

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    Hey Shane, for your 2020 Lexus RX 350 that didn't have a factory hitch the trailer wiring that you honestly should have gone with is the part # C56217 which is for the versions of the vehicle that don't have the tow package. While your vehicle has the connector it's not active which is why it's not working as-is. Maybe Lexus dealer could activate the wiring harness but we don't have any info on that.
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  • Will a Trailer Hitch Rated for 6,000 Pounds Allow a 2015 Toyota Highlander to Tow 3,500 Pounds
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  • Does Curt Trailer Wiring Harness # C56217 Fit 2017 Highlander Hybrid
    Yes, the Curt trailer wiring harness part # C56217 that you referenced does fit the 2017 Toyota Highlander Hybrid like what you have.
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    For your 2015 Toyota Highlander all of the hitches we offer have the same capacities of 900 lbs tongue weight and 6000 lbs total trailer weight so I would recommend the Curt part # C13200 since it is our most popular option. I attached an install video for this hitch as well. Before you do any towing I would recommend you determine the weight of the trailer and vehicle and then compare that to the total weight your vehicle can tow which will be listed in your owners manual. You will need...
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  • Can Curt Trailer Wiring Harness for 2011 Toyota Highlander Be Grounded Without Drilling
    It's not required to drill a hole for the ground with the Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector part # C56217 on a 2011 Toyota Highlander. I have attached a video for you on a newer model which shows a possible factory ground you can use without drilling another hole. If you have found a different one you want to use that is okay as well but it will be up to you as far as what socket is needed for said ground.
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    The 10 pin connector you are looking for to install the Curt trailer wiring harness part # C56217 on your 2018 Lexus RX 350L is under the dash and not the rear cargo area you sent in a picture of which is maybe where the confusion stems from. I attached a picture that shows where you'll find the connector and what it looks like as well as a link to the install instructions and an install video.
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  • Will Curt Trailer Hitch Receiver C73DR Work W/ Lift Gate Sensor On 2021 Lexus RX 350
    The Curt Trailer Hitch Receiver # C73DR you were looking at is a confirmed fit for your 2021 Lexus RX 350 and will fit with your rear lift gate sensor though it will likely change the location your foot must be to activate the sensor. You will need to place your foot to the left or right of the receiver for the sensor to detect your foot. If you are planning on towing with your RX 350 you will also need a vehicle wiring harness # C56217. I included videos of the products mentioned for...
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    The Curt Trailer Hitch Receiver # C13394 you were looking at is indeed a confirmed fit for your 2021 Lexus RX 350L. However, if you have the aluminum rim spare, it wouldn't work as this spare is too wide. This hitch will partially block the hands free lift gate sensor, but it will still be useable. You will just need to place your foot on either side of the receiver and move it in an out until you find the sweet spot of the sensor. After doing this a few times it will become second nature...
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  • How to Determine 2015 Toyota Highlander Has Factory Taillight Converter for Trailer Wiring
    Here's what you'll want to do to easily determine if your 2015 Toyota Highlander has the factory converter for trailer wiring. Check out the install video link I attached and fast forward to the 4:00 minute mark. This is the portion of the install video for the # C56217 that covers installing the needed fuse to activate the converter box of the kit. If your Highlander already has a fuse in the shows slot you have the converter already and all you'd need is the # 56042 for trailer wiring....
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  • Installation Video For Curt Trailer Wiring Harness On A 2021 Lexus RX350
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  • Recommended Trailer Wiring Harness for 2020 Lexus RX 350L
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