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

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

Item # C76CR
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Custom Fit Vehicle Wiring

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Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector 4 Flat C76CR
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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. Call 800-298-1624 to order Curt custom fit vehicle wiring part number C76CR or order online at etrailer.com. Free expert support on all Curt products. Guaranteed Lowest Price 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 (8)
  • Q & A (20)
  • Photos
  • Why etrailer?

Curt Custom Fit Vehicle Wiring - C76CR

  • Trailer Hitch Wiring
  • 4 Flat
  • 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
    • Locate connection points behind tail lights
  • 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 rear driver's-side and passenger's-side tail lights. 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 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 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.



56452 CURT T-Connector - Surface Mount Technology - 4 Wire

Installation Details C76CR Installation instructions

This Product Fits The Following Vehicles





Customer Reviews

Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - C76CR

Average Customer Rating:  4.6 out of 5 stars   (8 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.

- C76CR
by:
2021 Toyota Highlander

I wish I had bought a towing package with my new Highlander regardless of the cost. Then it would have been plug and play and no concern. I routed the wiring to the best of my ability to hug the bottom of the car but know that if I ever drive off the pavement (and I use my car for everything) there is the risk of something snagging the power wire. I also found regular butt connectors vs heat shrink sort of cheesy - did not use. Was also very nervous in removing tail lights and re-installing. Only takes one break of something to wish you had never gone this route.



- C76CR
by:
2020 Toyota Highlander

The harness is very good quality and the actual connections area snap but getting to the connectors behind the tail lights was not easy for me. There are no videos made yet for the 2020 and 2021 highlander installation and the instructions are not comprehensive on the body panel separation needed at the tail lights to get to the connectors. I was concerned that I was going break something. I did two additional things for my installation also. First I enclosed the wire from the battery in a 3/8 plastic wire loom slit tubing for added protection, and secondly, I did not use the crimp connectors that came with the kit but soldered and heat shrunk those connections instead. I also put a drop of solder on the pre made white ground wire connector. I made sure all the wiring was secured with zip ties as best as possible wherever I could get to it. It’s not difficult per say to install this kit but it was time consuming for me and a bit nerve racking behind the taillights. Final result: works great!



- C76CR
by:
2021 Toyota Highlander

Excellent customer service, great pricing and on time delivery. Very easy install on my 2021 Toyota Highlander . Highly recommend purchasing products from etrailer.com Thanks again etrailer



- C76CR
by:

Products (Hitches ) are excellent, very easy to install,(even without directions. Videos sure were helpful too. Great,quick response from your employees. Sure beats the dealers in explanations and prices. WILL DEINITELY USE AGAIN.



- C76CR
by:

I have done business with E-Trailer a lot in the past and as always I received Excellent customer service. The products is as advertised with the best price I could find.



- C76CR
by:

Looks great on our vehicle



- C76CR
by:



- C76CR
by:


8
8

Ask the Experts about this Curt Custom Fit Vehicle Wiring

  • Recommendations for Hitch and Wiring Harness for 2020 Toyota Highlander Limited
    I am happy to help you find the right setup to tow with your 2020 Toyota Highlander Limited. First, you need the Curt Hitch # C99FR which is a confirmed fit for all 2020 Toyota Highlander Trim types including your Limited package. Next, you need one of two wiring harnesses depending on whether or not your Highlander has a factory installed tow package. You can look under the rear bumper on the driver's side to find a quick connect (see picture below). I recommend the T-One 4 Pole Wiring...
    view full answer...
    Image 1 for
  • Fit of Curt C76CR T-Connector Trailer Wiring Harness on 2021 Toyota Highlander
    We carry the Curt 56452 T-connector as part # C76CR. The # C76CR is a fit for the 2021 Toyota Highlander as confirmed by Curt. Because of the COVID situation and the difficulty in obtaining new vehicles from dealerships for fit testing, it's taking the hitch/wiring manufacturers like Curt longer to determine fits than usual.
    view full answer...
  • Recommended Wiring Harness for 2020 Toyota Highlander
    The Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # C76CR is confirmed to fit the 2020 Toyota Highlander without the factory tow package. If you have the factory tow package you need the # TK74FR T-One Vehicle Wiring Harness for Factory Tow Package - 4-Pole Flat Trailer Connector. The # C76CR plugs in using the t-connector behind the rear driver's and passenger's side tail lights. The # TK74FR connector plugs into the factory tow package wiring harness, located...
    view full answer...
  • Is The Curt Wiring Harness Item # C76CR Compatible With A 2020 Toyota Highlander
    Yes, the Curt T-Connector Vehicle Wiring Harness Item # C76CR is compatible with your 2020 Toyota Highlander. We have not installed the harness on that vehicle as of this time so we do not have a video to provide however; I have included a copy of the instructions which will also come with the harness. The instillation is not difficult and can be done with the vehicle on the ground in your driveway.
    view full answer...
  • Best Trailer Hitch for Mounting Trailer Wiring Harness on 2021 Toyota Highlander
    The best trailer hitch receiver for your 2021 Toyota Highlander which is going to allow the easiest mounting of a trailer wiring harness is definitely the Draw-Tite Trailer Hitch Receiver # DT84MR. The reason the Draw-Tite is better than the similar Curt Trailer Hitch Receiver # C45CR is because the Draw-Tite has a built-in mounting point to attach a bracket, and the Curt does not; I have added a photo of the mounting point for you to check out. The correct 4-way trailer wiring harness...
    view full answer...
    Image 1 for
  • Correct Trailer Wiring Harness for a 2021 Toyota Highlander With or Without Tow Package
    The correct trailer wiring harness for a 2021 Toyota Highlander without factory tow package is the Curt T-Connector Vehicle Wiring Harness part # C76CR which plugs in behind the taillights. The correct trailer wiring harness for a 20021 Toyota Highlander with factory tow package is the T-One Vehicle Wiring Harness part # TK74FR which plugs into the tow package port. If you are not sure whether or not you have the factory tow package you'll want to reach out to the dealer but this is almost...
    view full answer...
  • Hitch Install for 2020 Toyota Highlander Hybrid Regarding Fascia Trimming
    This Curt # C99FR Hitch is verified to fit your 2020 Toyota Highlander. There is some minor trimming on a plastic under body panel located underneath the vehicle between the back bumper and the spare. It is a simple procedure that most of our customers do with tin snips. The trimming is the same for Hybrid and Non-Hybrid models. I have included a link to a video showing the entire installation. At the 11:40 mark you can see the panel and the trimming. All the parts needed to install...
    view full answer...
  • Does Bumper Have to Be Removed to Install a Trailer hitch on a 2020 Toyota Highlander XLE FWD?
    All of the hitches available for your 2020 Toyota Highlander do not require removal of the rear bumper, including the Curt # C99FR you were looking at. However, there is a plastic underbody panel on the driver's side that has to be removed. Once the hitch is installed, the underbody panel can be left off or trimmed to fit around the hitch and put back in place. You can check out the installation process for this hitch in the video linked below. If you are looking to tow a trailer with...
    view full answer...
  • Correct Trailer Hitch for a 2021 Toyota Highlander XSE
    I called Curt and confirmed the Curt Trailer Hitch Receiver part # C99FR is a fit for a 2021 Toyota Highlander XSE. The Curt Trailer Hitch Receiver part # C45CR is not a fit for XSE models. The former was redesigned for the XSE. In order to complete this setup you'll need the Curt T-Connector Vehicle Wiring Harness part # C76CR, Brake Controller Install Kit part # ETBC7L, and the Curt Echo part # C51180.
    view full answer...
  • Is There a Trailer Hitch that Fits 2021 Toyota Highlander XSE
    The Curt hitch part # C99FR fits all models of the 2021 Toyota Highlander so it would fit your XSE model. Then for trailer wiring the Curt connector part # C76CR would be a great and easy fit.
    view full answer...
  • Correct Trailer Wiring for my 2020 Toyota Highlander
    If you have installed the Tekonsha T-One Vehicle Wiring Harness for Factory Tow Package part # TK74FR and have no lighting functions I believe your vehicle does not have the tow package pre wired. You can figure this out with your VIN and calling the dealership. If it is pre wired you can ask them about a flash to activate the package but I have only really heard about this in some Jeep Grand Cherokees. If it is not pre wired the Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat...
    view full answer...
  • Trailer Wiring for 2020 Toyota Highlander without Converter
    The # TK74FR that fits your 2020 Toyota Highlander does not come with the converter box and at this time we do not offer the box separately but we do have a different trailer wiring solution that will work with the # C76CR which plugs in behind the taillights and comes with it's own converter box.
    view full answer...
  • Parts Needed to Install 7 Way Connector on 2020 Toyota Highlander
    We have just what you're looking for. If you don't already have a 4 way plug on your 2020 Toyota Highlander, you'll need to start by installing one, since those provide the base connections needed to install a 7 way. For the 4 way plug you'll want to use the Curt # C76CR, which will tee into your driver and passenger side tail lights. If you've already got the 4 way connector, you'll just need the 7 way which can be installed using the # ETBC7L. The ETBC7L will plug into the 4 way and...
    view full answer...
  • Recommendation Trailer Hitch 2021 Toyota Highlander XLE
    Yes, the Curt Trailer Hitch Receiver # C99FR is a confirmed fit to your 2021 Toyota Highlander, it fits all models of the Highlander so it would fit your XSE model. For trailer wiring I suggest the Curt # C76CR. This will quickly and easily install a 4-way trailer connector, this plugs directly into existing wiring. Powered converter reduces strain on wiring system and is made using SMT to ensure superior performance.
    view full answer...
  • Difficulty Of Installation For etrailer Receiver Versus Draw-Tite On a 2021 Toyota Highlander Hybrid
    The etrailer Trailer Hitch Receiver # e75ZR is an easier installation than the Draw-Tite Max-Frame Trailer Hitch Receiver # DT84MR for your 2021 Toyota Highlander Hybrid. It is rated a 5 out of 10 for installation difficulty with a install time of 50 minutes while the Draw-Tite is rated a 6 out of 10 and an installation time of 1 hour. Both receivers have the same 500lbs tongue weight and 5,000lb trailer weight ratings. Be sure to verify your maximum weight ratings with your Toyota dealer. I...
    view full answer...
  • Troubleshooting Tekonsha Trailer Wiring TK74FR not Active on 2021 Toyota Highlander
    The # TK74FR that fits your 2021 Toyota Highlander if it had the OEM tow package does not come with the converter box needed for vehicles with the tow package, and at this time we do not offer the box separately. But we do have a different trailer wiring solution that will work with the # C76CR which plugs in behind the taillights and comes with it's own converter box. The box might be available if you checked with Toyota directly.
    view full answer...
  • Trailer Hitch that Fits Toyota Highlander XLE Hybrid AWD
    For your 2020 Toyota Highlander XLE hybrid we have the Curt hitch # C99FR that you referenced as a confirmed fit. This fits hybrid and non-hybrid models. For trailer wiring then the Curt # C76CR is a confirmed fit that installs easily and works great. 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...
    view full answer...
  • Recommended Ball Mount for Towing 5x8 Rental Trailer With 2020 Toyota Highlander
    The U-haul 5x8 trailer has a maximum GVWR (maximum recommended weight of trailer plus contents) of 2700 lbs. The trailer's tongue weight, which could be anywhere from 100 to 400 or so lbs will cause the rear suspension of your Highlander to squat to a certain degree. I'd go with a ball mount that provides a 2 inch rise to account for the anywhere between 1-3 inches of squat you'll experience. This will leave the trailer close enough to level that everything will work fine. We offer...
    view full answer...
  • What Do you Recommend for 3 Kayaks, Exterior Storage, and 12 Fishing Rods?
    I have a solution for you. For 2 of your kayaks, your fishing rods (maximum of 12), and a covered 18 cu. foot cargo box, I recommend the Malone Ultimate Angler MegaSport Trailer with Saddle Style Carriers - Fishing Rod Tubes - 1,000 lbs # MPG550-AU. The reason why you should go with a trailer as opposed to a hitch cargo carrier and a roof rack is because those options will not allow you to transport all the accessories you want to transport. The great thing about having the Angler MegaSport...
    view full answer...
  • Comparing T-One Vand Curt T-Connector Vehicle Wiring Harness for 2020 Toyota Highlander
    The T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector part # TK99FR and Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector part # C76CR are both fits for a 2020 Toyota Highlander without tow package. The former is made by Tekonsha and the latter Curt but they are both fits. I recommend the T-One Vehicle Wiring Harness as you don't have to run any separate wires like you do for the Curt T-Connector Vehicle Wiring Harness.
    view full answer...

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Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Lindsey S
Edited by:
Lindsey S
Employee Jeff D
Installed by:
Jeff D
Employee Kristina F
Written by:
Kristina F

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