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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 # C56349
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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. T-connector plugs 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 C56349 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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CURT Custom Fit Vehicle Wiring - C56349

  • Custom Fit
  • Trailer Hitch Wiring
  • 4 Flat
  • 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 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
    • Locate connection points behind tail lights
    • Plug in T-connector
    • Run hot lead to car battery
  • 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
  • Limited 1-year warranty


Installation

This custom-fit T-connector plugs into your vehicle's wiring harness, which is located behind the driver's side and passenger's side tail lights. You will have to remove the tail light assemblies to access this harness. Once you've plugged in the T-connector, run the hot lead to your car battery. Connect the lead to the included fuse holder, and then connect the fuse holder to the positive terminal on your battery.


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.



56349 Curt T-Connector - Surface Mount Technology - 4 Wire

Replaces 56282

Installation Details C56349 Installation instructions

This Product Fits The Following Vehicles



California residents: click here



Customer Reviews

Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - C56349

Average Customer Rating:  4.7 out of 5 stars   (121 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 reduces strain on wiring system and is made using SMT to ensure superior performance.

- C56349
by:

Hello, I thought I would respond to you about a couple of issues with the hitch and wiring harness. The hitch had paint that chipped off and the harness was damaged on the white wire, I did not notice it until it was installed, so I had to splice in a new one from the parts store.


Comments
Customer Service will reach out to you.
-- Etrailer Expert Sierra K - 11/01/2021


- C56349
by:

Very straight forward install instructions for both hitch and wiring kit. No fit up issues on either. Very nice. I definitely will recommend both.



- C56349
by:

This harness was plug-in simple. Took about 30 minutes to get it installed up to the power wire part. Then came the laying on the back under the truck lacing the wire under the frame. It was much easier than I was anticipating leading up to it. *CAUTION* make sure to run the wire in as short a path as possible! When I got to the battery hook-up portion I had only had about 8"-9" of excess wire. Hooked it up and had all of my trailer lights. Not a bad install at all, just take your time and plan your next move as you go.



- C56349
by:

Wiring harness was installed in about an hour. We didn’t have any problems doing the installation



- C56349
by:
2016 Toyota Tacoma

This product is totally worth the money!!!! Everything worked the first time .. the install was very easy, only thing that was a little difficult was running the positive cable from the battery to the rear bumber.. just take your time and follow the chassis, that was a big help.. I bought this product to install rear led brake light strip and wanted to hide the cables to give it a oem look.. would definitely recommend this product!



- C56349
by:
2017 Toyota Tacoma

Does its job, very simple, longest part is running wires and securing with zip ties. Works great! If you watch the video on Etrailer from the older model you get a good idea of how it all goes together it’s only slightly different.



- C56349
by:

Ordering was easy price was great instructions were simple Took about 50mins to install the hitch and trailer wiring on my 2019 Tacoma



- C56349
by:

When ordering the expected delivery date was 9/2 after ordering I get an email saying that it is in stock and you expect to ship it by 9/3. I needed this harness for the weekend and needless to say it didn’t arrive. I have much better results usually when ordering from [online resale]. When it did arrive package was squashed and looked rough. The harness did work though.



- C56349
by:

Easy install plug and play. Hardest part was running to battery, but doable none the less. Has proven reliable no issues



- C56349
by:

Straight forward hook-up, the only downside was having to lay in the snow to run the power to the battery.



- C56349
by:
2021 Toyota Tacoma

Almost factory, but with the oem connectors and all the bits to install... best bang for your buck. Second time purchase, had 7 years on previous harness and was still perfect when I traded in the truck.



- C56349
by:

Wiring worked great and this company provided tech support when I needed it. I recommend them!



- C56349
by:

Seems to be good quality. Works as it should. Connectors are a good fit and click together with authority. The wiring going from driver taillight to passenger taillight is a tad short... it works fine but an extra 6" would have given more slack. It's also a mild aggravation to run the wire from taillight to battery, but I understand the reasoning. Tip for 3rd gen Tacomas on placement of the control pack: there is a recess behind driver taillight, towards the top of the truck, right side. There's a preexisting hole there. You can tuck the control box up under and behind the panel with the hole in it and zip tie it to that hole. It's solid and out of the weather / tire spray.



- C56349
by:

Easy selection process and easy install ation



- C56349
by:

Easy to follow directions and pretty quick install. Wish it came with the bracket to mount the plug somewhere instead of it just dangling.



- C56349
by:

Ordering and shipping are very smooth. Thank you!


Comments
Great, just as advertised.
Randy - 12/20/2021


- C56349
by:

No problem at all.



- C56349
by:

The directions are lacking but the installation video was very good. This was a replacement. The first one lasted five years



- C56349
by:
2016 Toyota Tacoma

Works well, fits perfect on a 2016 Taco ma.



- C56349
by:

This wiring harness fits great. It does take a little time, mainly because you have to run a hot wire all the way to the battery in the front. Why you can't use a source near the rear is not clear. But, overall I'm very pleased with it.



- C56349
by:
2017 Toyota Tacoma

The wiring harness is very good. The connectors go between the existing truck harness and the light sockets, making for a very clean installation with no cutting of wires on the truck.



- C56349
by:
2018 Toyota Tacoma

The harness is well built and the connectors fit perfectly into the OEM harness. I routed the power cable through the cab along the original harness and it took about 2 hours for the complete install. Instructions were clear and all the required hardware was provided. Everything worked exactly as it should. Great product, definitely recommended.



- C56349
by:

So far, I got the package as promised. I will update the review when I have it installed and try it.



- C56349
by:
2019 Toyota Tacoma

Excellent product. Easy installation! Would recommend!



- C56349
by:

Harness was great the only issue I had was the instructions included were kind of lacking. I would recommend watching the installation for the t-one version of this harness, I could not find a video for the installation of the curt.


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Show More Reviews

Ask the Experts about this CURT Custom Fit Vehicle Wiring



  • Would Trailer Wiring Cause Vehicle Blinkers to Hyperflash
    Trailer wiring should not cause hyperflashing on vehicle taillights. It would be related to the LED taillights you installed on your trailer. Most likely the resistors on the new lights aren't the correct value. You can test this by going back to the standard taillights and leaving the trailer wiring installed.
    view full answer...
  • 4-Pole Trailer Wiring Harness for 2017 Toyota Tacoma
    We do offer two choices in a plug-in T-connector 4-pole wiring harness for your 2017 Toyota Tacoma. Both are intended for trucks without the factory tow package. Please note that the term 'tow package' does not always mean the same thing. What is included in a 'tow package' can vary considerably from auto maker to auto maker, between models and even between model years. In our experience a Tacoma will either have a complete wiring set-up with wiring and trailer connector at the back of...
    view full answer...
  • Recommended Wiring Harness For 2017 Toyota Tacoma
    Both wiring harnesses that are confirmed to fit your 2017 Toyota Tacoma require a battery line being added. This is really to protect your wiring system. The powered converter reduces strain on a factory system and protects the system. I know it seems like more work to add a power line to the battery, because it is more work, however the work will give you peace of mind knowing that your converter will function correctly and keep your factory wiring from malfunction which isn't always...
    view full answer...
  • Right Turn Signal/Brake Light Stays On with Curt Trailer Wiring Harness on a 2016 Toyota Tacoma
    What you are describing sounds like a short in the converter box for Curt wiring harness # C56349 for your 2016 Toyota Tacoma. Since this is the second time this has happened it could indicate that there is something on the trailer that is causing the box to short out so I do recommend inspecting the trailer wiring and fixing any broken or pinched wires or anything else that seems problematic. I also recommend switching to the Tekonsha harness, # 118685, because we hear about less problems...
    view full answer...
  • Recommended 4-way Trailer Wiring for 2017 Toyota Tacoma
    I choose the Tekonsha, part # 118685, over the Curt, part # C56349, but they're extremely similar. The only reason I choose the Tekonsha is because it has a higher amp capacity than the Curt. This can help from overloading the harness if your trailer has a lot of lights that draw a substantial amount of power. It's not a significant difference but you never know if you may need the higher capacity at some point.
    view full answer...
  • Does Converter Need to be Used to Match Truck Wiring to Trailer Wiring
    That all depends on if your trailer lights have the stop light circuit combined with the turn signals or not. If the stop light and turn signals are combined then you should be good to go but if they are separate you will need to install a converter like part # 118158 to separate the stop and turn signals and match your trailer.
    view full answer...
  • Recommended 4-Pole Trailer Wiring Harness for 2016 Toyota Tacoma
    To provide a 4 pole trailer connector that will deliver the Right and Left Turn, Brake Lamp and Running Lamp signals from your 2016 Toyota Tacoma for use by your trailer, the Curt # C56349 would work fine for you. I personally prefer the Tekonsha model, part # 118685 as we've found that they last longer than wiring harness offered by other manufacturers. I've liked to an installation video that you might find helpful.
    view full answer...
  • Trailer Wiring Harness Fit and Installation on 2016 Toyota Tacoma
    The Hopkins Wiring Harness 33355 that you referenced used to be a confirmed fit for your Tacoma, but the manufacturer made some changes to the harness and it is no longer a fit for the 2016 Toyota Tacoma. For a trailer wiring harness that is confirmed to fit your 2016 Toyota Tacoma, you will want to use the Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # C56349. This harness will indeed plug into your Tacoma's factory wiring behind the driver and passenger...
    view full answer...
  • Trailer Hitch and Wiring for a 2017 Toyota Tacoma
    Yes, the Draw-Tite trailer hitch # 75238 is a fit for your 2017 Toyota Tacoma. We have determined that the hitch fits from the 2016 Tacoma carry over to the 2017 model year as well. If you plan on doing some towing I recommend 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, and a storage bag. If the ball mount kit does...
    view full answer...
  • 4-Way Trailer Connector Recommendation and Ball Mount Kit For 2018 Toyota Tacoma
    I am happy to help you with the wiring you need to tow your boat with the 2018 Toyota Tacoma. I recommend Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector part # C56349 because it is a bit easier to install compared to the other options. It is a 4-way trailer connector to plug in your boat trailer to power the lights. Since you are planning on towing, I recommend etrailer.com ball mount kit part # 989900. It comes with 2 ball mounts; one with a 3/4 inch rise or...
    view full answer...
  • 4-Way Trailer Wiring Harness for 2021 Toyota Tacoma SR5
    We have 4-way wiring kits that fit your 2021 Toyota Tacoma and install easily but none of them would use the connectors you sent in a picture of. Instead the kits we have install by plugging inline with the taillight connectors like the part # C56349.
    view full answer...
    Image 1 for
  • 2016 Toyota Tacoma TRD Sport 7-Way Recommendation to Fit Bumper Cut Out
    You are on the right track for sure to install the # HM40975-11998. You would first need to start with a 4-way like part # C56349 and then to convert it to a 7-way you would need to cut off the 4-way of this hardwire and then hardwire it to the part # HM40975-11998.
    view full answer...
    Image 1 for
  • Trailer Hitch and Wiring For 2018 Toyota Tacoma To Tow Boat Trailer
    I recommend Draw-Tite Max-Frame Trailer Hitch Receiver part # 75238 for the 2018 Toyota Tacoma because the powder coat is a little better compared to the other options with the e-coat base. The rust preventive e-coat is helpful if the hitch is exposed to salt water when you tow the boat trailer. It also is a concealed cross tube design so it will look nice on the Toyota Tacoma. The only portion that is visible of the hitch once installed is the receiver tube. I am not sure what you mean...
    view full answer...
  • Why Does 4-Way Wiring Harness Have Hot Lead on 2017 Toyota Tacoma
    Each of the 4-way wiring harnesses for your 2017 Toyota Tacoma do require a hot lead run to the battery, and the reason for this is to power the module. This is needed in your Tacoma and other vehicles in order to protect the tail light circuits from being overloaded, as they are not able to provide enough power without being damaged. You are correct that there are plenty of other vehicles that this isn't needed, though through testing, the harness manufacturers have determined the hot...
    view full answer...
  • Availability of a Trailer Hitch for a 2017 Toyota Tacoma
    I recommend the Curt Class III Trailer Hitch Receiver, # C13264, This hitch will accepted a 2 x 2 inch ball mount. The Curt hitch is designed to fit your Tacoma and will require no drilling when installing on your vehicle. If you are planning to tow trailer, then you will also need a vehicle wiring harness, like # C56349. This wiring harness will allow you to connect a 4-pole flat connector to your Tacoma. The harness will allow to connect your trailer's light to your vehicle. If...
    view full answer...
  • What Hitch and 4-Way Wiring Harness do You Recommend for My 2022 Toyota Tacoma?
    For a great hitch harness for your 2022 Toyota Tacoma, I recommend the Curt Hitch - 2" # C13264. In addition to the 900 pound maximum tongue weight capacity and the 8,000 pound gross towing capacity, the Curt hitch comes with a gloss outer coating over the base coat that gives you superior rust and corrosion resistance than the other hitches we carry. Also, the hitch is manufactured here in the U.S.A. Another great thing about this hitch is that it installs only about 4 inches from the...
    view full answer...
  • What Light Kit Will Work with the Reese Cargo Carrier # 63153 on a 2021 Toyota Tacoma?
    For taillight kits for the 24x60 Reese Cargo Carrier for 2" Hitches # 63153, I recommend the Light Kit for Draw-Tite, Tow Ready, and Rola Railed Cargo Carriers # 20174. On the Reese cargo carrier # 63153, the tighter mesh floor is not large enough for the plug to pass through. Therefore run the wire leads under the platform to the lights, then up the front of the carrier and around to the back of the light. This also helps prevent the wires from getting pinched by the cargo. On vehicles...
    view full answer...
  • Adding a 7-Way Trailer Connector and Brake Controller to a 2016 Toyota Tacoma without Tow Package
    To install a brake controller on your 2016 Toyota Tacoma you will first need a 4-Way trailer connector # C56349 unless the truck already has one. Then you will need to install # ETBC7 which provides the 7-Way, wiring, and accessories that will be needed to hardwire in the brake controller. I have included the best links that show and explain the ETBC7 installation for you. Since the ETBC7 is a hardwire install on any vehicle you could really watch any of the videos but I chose to link...
    view full answer...
  • Installing a 7-Way Trailer Connector on a 2017 Toyota Tundra with 4-Way Flat Connector
    Using the Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector, # C56349, will provide you with a great start to your 7-way. To connect the Hopkins/Pollak 7-Pole and 4-Pole Connector, # HM40975-11998, to the Curt T-Connector, # C56282, you would have to first cut the green, yellow, and brown wires of the 4-way connector. Then, using the included butt connectors, you would match up the wires on the 4-way and also add the following from the Hopkins connector (Red...
    view full answer...
  • Parts Needed to Install 7-Way and Brake Controller in 2020 Toyota Tacoma
    You will need to start with a 4-way installed on your 2020 Toyota Tacoma (if you do not have one). For that you would want the # C56349. From there you would need to convert the 4-way to a 7-way so that you can install the brake controller. For that you will want the Brake Controller Install Kit and 7-Way Adapter part # ETBC7. I attached installation instructions and an install video for this product as well. For a brake controller I would recommend the iCommand part # 5535. This is one...
    view full answer...
    Image 1 for
  • Right Turn Signal Always Has Power When Testing 4-Way with Circuit Tester
    It sounds like you have a classic ground issue with the Curt T-Connector Vehicle Wiring Harness part # C56348. When testing the 4-Way with a tester like Curt LED 4-Way Flat Connector (Vehicle End) Tester part # I26 the right turn like should only light up when you activate the right turn function. If it is always illuminated like you mentioned, I recommend to make sure the ground wire of the harness is attached to a clean bare metal surface on the frame. If you don't have a proper ground...
    view full answer...
  • Recommended Brake Controller Plug-In Adapter For Prodigy P2 On 2016 Toyota Tacoma
    If you have a factory 7-way connector at the back of your 2016 Tacoma the correct brake controller plug-in wiring adapter for your Tacooma is part # 3031-P. This adapter is designed to work with the Tekonsha P2, part # 90885 and plugs into the port located under the dash. If you do not have a factory 7-way connector there will be no port to plug an adapter into and you will need to first install a 4-way connector like part # C56349. You will then need to install part # ETBC7. This...
    view full answer...
    Image 1 for
  • Installation Of Brake Controller On 2016 Toyota Tacoma
    If you have a factory 7-way on your Tacoma, you can easily connect the brake controller by using a plug-in adapter like part # 3031-P. You simply plug one end into the back of the controller and the other end plugs into the brake controller port under the dash. If you do not have a factory trailer connector on your Tacoma you will first need to install a 4-way harness like part # C56349. You just plug this harness into the connection points behind the tail lights, and then run a hot lead...
    view full answer...
    Image 1 for
  • Wiring for Trailer to Match 4-Way on Tow Vehicle
    If you are installing a 4-Way like the Curt T-Connector # C56349 on your 2016 Toyota Tacoma (that you inserted for your vehicle info) then you need to make sure the wiring on your trailer matches the wiring configuration of this 4-Way (see attached). If you don't already have wiring on your trailer then I recommend using a kit like the Optronics # A35W42B which comes with a 4-Way and 35' of wiring that you'd just run to your lights: White - ground Brown - tail lights Yellow - driver side...
    view full answer...
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Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee Lindsey S
Edited by:
Lindsey S
Employee Jacob T
Video Edited:
Jacob T
Employee Cole B
Installed by:
Cole B
Employee Wilson B
Updated by:
Wilson B
Employee Kristina F
Updated by:
Kristina F
Employee Isabelle B
Updated by:
Isabelle B
Employee Amanda M
Written by:
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