bing tracking image
  1. Custom Fit Vehicle Wiring
  2. CURT
  3. 4 Flat
  4. Custom Fit
  5. Trailer Hitch Wiring
  6. Powered Converter
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

Part Number: C56158
$42.86
Retail:$72.95
You Save: 41%
Custom Fit Vehicle Wiring

Will this fit?

To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.

Add to cart
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

In Use/Installed

Customer Photos

Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. T-connector plugs directly into existing wiring. Powered converter is made using SMT to ensure superior performance. 1-800-940-8924 to order CURT custom fit vehicle wiring part number C56158 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.
  • All Info
  • Reviews (668)
  • Q & A (0)
  • Photos

CURT Custom Fit Vehicle Wiring - C56158

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

Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. T-connector plugs directly into existing wiring. Powered converter 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
    • Locate connection points in rear cargo area
    • Plug in T-connector
  • Includes a tail light converter to ensure that your vehicle's wiring matches that of your trailer
    • Powered module pulls power directly from 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
  • Limited 1-year warranty


Installation

This custom-fit T-connector plugs into your vehicle's wiring harness, which is located in your rear cargo area. You will have to remove the rear scuff panel and additional trim to access this harness.


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.


Tail Light Converter with Surface-Mount Technology

A tail light converter is built into this T-connector. 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.



56158 CURT T-Connector Vehicle Wiring Harness with 4 Pole Trailer Connector

Installation Details C56158 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 - C56158

Average Customer Rating:  4.8 out of 5 stars   (668 Customer Reviews)

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

by:

The hardest part was removing the under car trim panel. Installation was straight forward and completely idiot proof (I'm proof of that). Well built and designed. I highly recommend getting this!

Michael profile picture

Michael

9/5/2024

After 1 Year and a couple thousand miles of towing it still works great!



by:
2012 Honda CR-V

I am still very happy a year out. I was able to easily install the Curt trailer hitch on my 2012 Honda CR-V all by myself. This is the second time that I've purchased a hitch from etrailer and it was an excellent expeirience both times. The product came well-packaged with no parts missing and instructions. The also provided links to ibstructional videos so you can literally follow along as you watch someone guide you. I use my hitch to tow a small 6x4 ft. trailer full of fire wood, leaves, dirt, furniture, and anything else that will fit. Etrailer will be my top consideration anytime I am on the market for vehicle accessories. Great products. Great customer service. Great Company.

Howie P. profile picture

Howie P.

4/26/2017

Still working great! No problems with the wiring at all!



by:
Honda

I installed this in my 2012 Honda CRV because my trailer’s running lights stopped working. The product is easy to install because it only has two plugs to connect in addition to an inline fuse, ground wire, and fuse for the car. The only bummer was that the inline fuse prongs were next to each other but the inline fuse plug’s receptors were offset, so I wasn’t sure if the fuse was really making proper contact. But overall, I rate it 5 stars.



by:

This wiring kit was easy to install and has been powering my trailer lights ever since. My only complaint is that the provided adhesive for securing the box in place behind the interior panels was not very sticky and I had to use something else.



by:
2012 Honda CR-V

Price works great I installed it myself and yes I am a woman, I watch the video and everything went just as it should have I save myself $500 not having a trailer hitch and the wiring done and doing it myself. Thank you so much e trailers

Carolyn profile picture

Carolyn

12/17/2020

Great! We use the hitch for an electric wheelchair for my 90 year old dad. I’m the one that has to hookup it all on my own. Couldn’t be more pleased with the fit. Thanks for being a great company via the internet. Carolyn a loyal customer



by:

It seemed daunting. I had never taken apart the interior panels of my car. But with good directions and good videos, things were where they were supposed to be, and it was doable; even for a music teacher.



by:
Ford Edge

Pretty easy I stall. My only gripe is only able to mount with the tape. I wonder if it will hold up when the car is in the sun. Also when mounted the wires rub against a sheet metal edge which would cut them over time. I covered the edge with Gorilla Tape.



by:

The brake and blinker lights failed and when I metered the connections I was getting about 3 volts. I contacted etrailer about the issue and they want me to troubleshoot it with them but unfortunately I am out of town for an extended period and I do not have tools with me to open up the area that houses the controller. I will update this review when I am in a position to troubleshoot the unit.



by:

Easy to install. Instructions were clea r.



by:

I wired it to the outside of the Crv so I didn't have to open the hatch every time I wanted to pull my trailer. First I cut the trailer plug off a foot from the plug and ran the wires through the grommet in the photo. I had already cut a hole in the underbody and this grommet lead right to this hole. Then I reattached the trailer plug to the wires with shrink wrap connectors and ran the plug right above the hitch. Very clean install and setup I really like it.



by:
2014 Honda CR-V

Easy installation. Very good directions. Watch the installation video you can’t go wrong.



by:
2015 Honda CR-V

The trailer hitch and wiring harness arrived in 2 days, which was much quicker than I expected. The installation went smoothly thanks to the detailed instructional videos on etrailer.com. Great products, prices, and service. Thank you etrailer.com.



by:
2015 Honda CR-V

Here is the final finish of the Curt "T" connector. Wired to my Hidden Hitch I purchased. Ordered a separate bracket to house the four pin plug to give it a cleaner look. Easy to install and looks amazing. Can't wait to try it out.



by:

Exceptional service. Fast delivery. Another retailer failed to install a towing wiring harness so I found this product which was exactly what I needed. It came with videos and instructions that made it incredibly easy to install myself.



by:

Just what I needed for my CRV. Took about 30 min start to finish to install. Online video was all I needed to get the job done!



by:

Thank you for such an awesome experience! Never done this before and watching your video made it really easy to install. My jack had broken so I had to do it from the floor. A little tough but managed without any help. Also, The wiring was cake as well. Perfect demonstration and walkthrough on your video(s). You asked for the pics so I shot a few for you. I've never had a vehicle with a tow hitch so my next goal is a trailer. gotta save for that one :(

Well, once again I want to thank you, guys!



by:
Honda CR-V

Very nice and well made trailer hitch wiring harness for my Honda CRV. Brake, tail lights, turn signal lights tested perfect first try. Cover for plug keeps contact points clean when not in use.



by:

Once I found the correct connector installing it was simple. This was so much better than splicing it in like we used to do! I think it was money well spent! I would purchase it again if I got another car.



by:
2016 Honda CR-V

Routed the wiring harness through the existing grommet behind the left interior wall panel and then out the existing hold at the bottom of the protective cover.

Love the installation videos! Made installation a snap.



by:
2015 Honda CR-V

Kit fit as described. Struggled to get the black rear panel back on as others had mentioned. Tough to get that gap out as it separates from the other piece near the rear seat. I did stick my connector to come out this hole as in pic below. Sticky tape fell off both sides despite wiping though. Used gorilla glue to help and otherwise all was fine. I'm a novice and it is do-able.



by:

the product was supposed to have double stick tap to attach the module to the wall of the car, it did not, it also did not have certain metal screws and the instructions were not adequate.



by:

Awesome instructions and easy to instal l.



by:

Easy installation. Product arrived on time. No issue with any of this process . I’d buy from here again ..



by:

I installed hitch and trailer harness last week on my 2015 CR-V. All aspects of this install went smoothly. I was so impressed with all the info available to me on this install along with the step by step instruction. You've got a great product and great product support. Thank you.



by:

Followed the video and the installation went very smoothly.


25
668
Show More Reviews

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

  • Recommended Hitch for a 2013 Honda CR-V
    Yes, you definitely can! To install a class III hitch on a 2013 Honda CR-V, I recommend the etrailer item # e98868. This hitch is custom fit and bolts to your Honda with included hardware. It has a 3,500 lbs towing capacity and a 350 lbs maximum tongue weight. I have attached a couple of pictures and linked an installation video below so you can see what this hitch looks like once installed. If you are planning on towing you will also need a wiring harness item # C56158 and a ball mount...
    view full answer...
    Image 1 for Image 2 for
  • Recommended Hitch for a 2014 Honda CR-V
    Wider options for accessories and higher capacity on bike racks. The highest capacity class I and II bike carriers top out at 65 lbs. A class III bike rack can go over 80 lbs per bike and still stay under your CR-V's tongue weight. Often times, including this one, the class III hitches are less expensive. For your 2014 Honda CR-V, I recommend the etrailer Trailer Hitch item # e98868 you were looking at. This is a class III hitch with a 2" receiver. It is custom fit and bolts to your Honda...
    view full answer...
  • Recommended Hitch for a 2015 Honda CR-V
    Yes, it will. The etrailer Trailer Hitch item # e98868 is custom fit and designed specifically for the 2015 Honda CR-V. This is a class III hitch with a 2" receiver. It has a 3,500 lbs towing capacity and a 350 lbs maximum tongue weight. So this hitch will work with most hitch mounted accessories and has the ability to pull a trailer. I have attached an installation video below to help you get this hitch set up. If you are planning on towing you will also need a wiring harness item...
    view full answer...
  • Trailer Hitch and Wiring Recommendation for a 2014 Honda CR-V
    If you do not have a hitch you would first need one like part # 75742. For a ball mount you could use the part # D-4 that you referenced as long as your trailer would require a 3/4 inch rise or 2 inch drop to be towed level. For more info on how to pick out the correct ball mount you would want to check out the help article I attached. For a 2 inch ball to go with the #2923 you would want the part # 63845. You will also want the Hitch Pin and Clip, # PC3 For a 4-way you would want the...
    view full answer...
  • 2015 Honda CRV Trailer Hitch and Wiring Recommendation
    For the price you can't beat the Curt hitch part # C13119 for your 2015 Honda CR-V. This hitch would work well for you. You may have trailer wiring on your vehicle, but if not you would want the part # C56158. 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 4 inch drop. It also includes a 1-7/8 inch ball, 2 inch ball, hitch pin with clip,...
    view full answer...
  • Curt Trailer Wiring Install Video for a 2015 Honda CR-V
    I checked your order notes and it looks like you ordered the Curt trailer wiring harness part # C56158 which has been confirmed as a fit for your 2015 Honda CR-V. To see how it installs check out the install video that will walk you through then entire process on a 2015 Honda CR-V just like yours. I also attached a link to the install instructions. Basically you will remove some interior panels in the rear of the vehicle and you will find the correct connector to use.
    view full answer...
  • Install of Curt C11555 On 2014 Honda CR-V- Can Underbody Panel Be Left Off Instead of Trimmed
    That would be entirely up to your discretion. The linked installation instructions for the Curt # C11555 include a diagram outlining exactly where the panel needs to be trimmed, but if you wish you could certainly simply remove the panel and not re-install it. The panel makes the vehicle slightly more aerodynamic, but we're talking by a tiny amount. Not all models of the CR-V have the panel, so leaving it off wouldn't be a big deal. If you'll be using the hitch for some light duty towing,...
    view full answer...
    Image 1 for
  • Installing Curt T-Connector Vehicle Wiring Harness on 2015 Honda CR-V
    To install the Curt T-Connector Vehicle Wiring Harness # C56158, the white connectors will plug into your vehicle's existing factory wiring connectors. The connectors you will want to access are behind the driver's side rear access panel in the cargo area. Once you have access behind the rear trim panel, you will want to find the connectors for the vehicle taillight wiring. Typically these connectors are blue, but they may be a different color in your vehicle. The taillight wiring connectors...
    view full answer...
    Image 1 for Image 2 for
  • Parts Needed to Install a 7-Way Trailer Connector on a 2014 Honda CR-V
    Honda did not offer a towing package with a 7-way trailer connector for the CR-V, so using a 4-way to 7-way adapter is the best option. You will first want to install a wiring harness with a 4-way connector like part # C56158. This will provide all of the trailer light functions. I have attached the installation video and instructions for you to check out. Next you will want to install a 7-way adapter. If you do not need all of the additional functions that a 7-way trailer connector provides,...
    view full answer...
  • Should 4-Pole Trailer Connector Be Stored Inside Vehicle or Mounted Externally
    A 4-pole wiring harness like Curt # C56158 or Tekonsha # 118561 can simply be pulled from the back of the vehicle when you need it for towing a trailer. The wiring will be safe with the hatch closed on it (as long as you avoid the latch mechanism) since the weather stripping will protect it. Wiring brackets are built-in to some hitches and separate brackets are made for mounting these connectors externally, like # 18144, but for many people keeping the 4-pole protected inside the vehicle...
    view full answer...
  • Which Trailer Wiring Harnesses will Fit a 2013 Honda CR-V
    There are two trailer wiring harnesses confirmed to fit your 2013 Honda CR-V. They are the Tekonsha # 118561 and the Curt # C56158. The Tekonsha installs behind the tail lights and the Curt behind trim panels in the rear Cargo area. I have included install videos and install videos for each harness for you to take a look at.
    view full answer...
  • Recommendation For Hitch And Wiring For 2014 Honda CR-V
    It sounds like you are adding a hitch with wiring and a connector for your 2014 Honda CR-V. The Draw-Tite Class III Max Frame Hitch, Item # 75742, is a confirmed fit for your Honda. It has a maximum towing capacity of 4,500 lbs and a tongue weight capacity of 675 lbs. It has an easy bolt-on installation and all the hardware needed for installation is included. The Curt T-One Wiring Harness, Item # C56158, will give you trailer wiring and a 4-pole flat trailer connector. It installs...
    view full answer...
  • Troubleshooting Installation of Curt Wiring Harness on 2015 Honda CR-V EX-L
    My contact at Curt Tech said their harness # C56158 is a fit for your vehicle. He said that some later model vehicles had a second blue connector that had the wire you are seeking, so you may want to grab a flashlight and see if there is another blue connector. He also said to make sure your fuse is in the correct location in your box. I've attached a video as well as their installation instructions to help further. If you need further help, let me know.
    view full answer...
  • Why Does the Curt T-Connector Wiring Harness C56158 for a 2015 Honda CR-V Come With Two Fuses
    The Curt T-Connector Vehicle Wiring Harness part # C56158 does come with two fuses, one that gets installed inline with the harness that protects the converter and then one that gets installed in the interior fuse box that protects the vehicle's wiring.
    view full answer...
  • Running Lights Stay On with Curt T-Connector Vehicle Wiring Harness On 2016 Honda CR-V
    In order to troubleshoot the Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector part # C56158 which is a fit for a 2016 Honda CR-V you'll need a test light. Once you have this you'll then need to probe the running light wire going into the converter box with the signal NOT active. If you have power here then you know the issue is on the vehicle. If you don't have power here then test the running light wire leaving the converter box. If you have power here then you...
    view full answer...
  • Trailer Hitch Recommendation for a 2012 Honda CR-V Without Drilling
    We do have many trailer hitch options for your 2012 Honda CR-V that do not require drilling, however, they do require cutting the underbody panel to install a trailer hitch. One way around cutting the underbody panel would be to completely remove the underbody panel and then replace the panel when the lease is up. One thing to keep in mind when leaving the underbody panel off of the vehicle is that the underbody panel does contain some insulation, so you may notice a little more noise inside...
    view full answer...
  • Trailer Wiring Harness for 2001 Toyota Corolla
    I'd recommend the Tow Ready Circuit Protected Taillight Converter Kit for your Corolla, part # 119178KIT. This is a hardwired option. Due to the age of the vehicle, and the fact that the Corolla wasn't popularly used as a tow vehicle, there isn't a plug and play wiring option available. I'll link you to an install video showing the wiring harness being installed on a newer Toyota Avalon. Although the wire colors in the Avalon are probably different, the video will give you a good idea...
    view full answer...
  • Recommended Replacement Trailer Connector Wiring for 2013 Honda CRV
    It sounds like you have done your due diligence in finding the issue. Unfortunately there is not just a converter box replacement option available. I recommend replacing your wiring with the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118561 which is a confirmed fit for your 2013 Honda CRV. If you want to move to a different manufacturer, I also recommend the Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # C56158 for your vehicle....
    view full answer...
  • Troubleshooting Installation of Curt 4-Pole Wiring Harness C56158 in 2014 Honda CR-V
    Installation instructions for your Curt wiring harness # C56158 are linked for you along with an installation video showing a 2014 Honda CR-V like yours. The first things to check are that the included fuse is still good and is installed properly in the fuse holder, and that the white ground wire's ring terminal is tightly affixed to a clean bare metal surface that is free of paint and primer. Further troubleshooting will be easiest if you use a probe tester like # PTW2992 to test the...
    view full answer...
    Image 1 for
  • Trailer Hitch and Hitch Bike Rack Recommendation for 2013 Honda CR-V
    Your 2013 Honda CR-V can be equipped with any of three different classes of trailer hitch, either a light-duty 1-1/4-inch Class I, a heavier duty 1-1/4-inch Class II, or a 2-inch Class III hitch. Please refer to the linked article on hitch classes. I recommend the highest capacity 2-inch Class III type both for use with a hitch-mount bike rack and since you will in the future be towing. All three available Class III hitches can be seen on the link provided. The most popular (and cost-effective)...
    view full answer...
  • External Mounting Bracket for 4-Pole Trailer Connector on Curt Wiring Harness C56158
    Curt 2-inch Class III hitch # C13119 and 4-pole wiring harness # C56158 are both confirmed fits for your 2014 Honda CRV. For a mounting bracket for your 4-pole trailer connector you can use part # C58001, Curt's Easy Mount Bracket for 2-inch hitches. This bracket mounts to the hitch so you do NOT have to drill holes into your bumper. Please note some customers do prefer NOT using an exterior mounting bracket. By keeping the connector inside the vehicle's rear cargo area when not needed,...
    view full answer...
  • Finding the Tail Light Wiring Connectors to Install Trailer Wiring Harness on a 2013 Honda CR-V
    Installation of trailer wiring harness # C56158 on a 2013 Honda CR-V requires pulling back the driver side trim in the rear cargo area. The connectors should be back there but it is possible that they are further down and/or further forward on the vehicle. You should be able to follow the tail light wiring back to where the connectors are.
    view full answer...
  • Installing the Curt Custom-Fit Wiring Harness # C56158 on a 2015 Honda CR-V
    The Curt T-Connector Vehicle Wring Harness, # C56158, is designed to bypass pulling electric from your 2015 Honda CR-V's lighting wiring and get power directly from the vehicle's battery. The T-Connector harness includes a powered light converter that senses when the vehicle's lights are in use and then pulls electricity from the battery to send this signal to the trailer lights. The converter will take the stress off of your vehicle's lighting circuit and the extra fuse is wired on the...
    view full answer...
  • Does Negative Battery Cable have to be Removed to Install Trailer Wiring on 2014 Honda CR-V
    The instructions for Curt trailer wiring harness # C56158 do not require disconnecting the negative battery cable to install the harness on your 2014 Honda CR-V. I have linked the instructions for you as well as a video showing installation.
    view full answer...


< Previous
123. . .4



Do you have a question about this Custom Fit Vehicle Wiring?


Info for this part was:

Employee Joe V
Test Fit:
Joe V
Employee Rick A
Test Fit:
Rick A
Employee Shane T
Test Fit:
Shane T
Employee Randy B
Test Fit:
Randy B
Employee Robert C
Test Fit:
Robert C
Employee Mike L
Expert Research:
Mike L
Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee Adam R
Expert Research:
Adam R
Employee Jeffrey L
Expert Research:
Jeffrey L
Employee Zack K
Video Edited:
Zack K
Employee Joshua S
Video Edited:
Joshua S
Employee Jacob T
Video Edited:
Jacob T
Employee Andrew L
Video Edited:
Andrew L
Employee Chris R
Video Edited:
Chris R
Employee Andrew K
Video by:
Andrew K
Employee Dustin K
Video by:
Dustin K
Employee Jonathan Y
Video by:
Jonathan Y
Employee Lindsey S
Updated by:
Lindsey S
Employee Wilson B
Updated by:
Wilson B
Employee Kristina F
Updated by:
Kristina F
Employee Isabelle B
Updated by:
Isabelle B
Employee Jeff D
Installed by:
Jeff D
Employee Cole B
Installed by:
Cole B

At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.