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  1. Custom Fit Vehicle Wiring
  2. CURT
  3. Custom Fit
  4. Trailer Hitch Wiring
  5. 4 Flat
  6. Converter
THIS ITEM IS NOT A FIT FOR
2023 GMC Sierra 3500

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

Item # C55309
Retail:$68.74
Our Price: $41.02
You Save: 40%
Custom Fit Vehicle Wiring
Not Confirmed to Fit

2023 GMC Sierra 3500

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Shipping Weight: 0.86 lbs
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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 - no cutting, splicing or tapping required. Converter is made using SMT to ensure superior performance. 1-800-940-8924 to order CURT custom fit vehicle wiring part number C55309 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 (13)
  • Q & A (0)
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CURT Custom Fit Vehicle Wiring - C55309

  • Custom Fit
  • Trailer Hitch Wiring
  • 4 Flat
  • 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 - no cutting, splicing or tapping required. 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 - no cutting or splicing of wires
    • Locate connection points behind tail lights
    • Plug in T-connector
  • Includes a tail light converter to ensure that your vehicle's wiring matches that of your trailer
  • 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: 5 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 tail lights. To access this harness, remove the driver's-side and passenger's-side interior trim panels in your rear cargo area.


Once installation is complete, the 4-way connector will be stowed within the jack storage compartment of 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.



55309 CURT T-Connector - Surface Mount Technology - 4 Wire

Installation Details C55309 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 - C55309

Average Customer Rating:  4.9 out of 5 stars   (13 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 - no cutting, splicing or tapping required. Converter is made using SMT to ensure superior performance.

by:
2005 Kia Sedona

Never thought I could purchase a trailer hitch that I could install myself. After review of the excellent video I ordered the Curt. It arrived very quickly and was much easier than I imagined. Also ordered the wiring kit for my vehicle and that too was very easy. I would recommend etrailer.com to anyone for any of the products they sell. They stand by you and make sure of your success.



by:
2003 Kia Sedona

I've had my hitch for over a year now and it's as good as the first day I put in on my Kia Sedona. I installed it myself in less than a hour including the wiring harness too. Good buy good price.



by:
Kia

This wiring harness for my Kia Sadona was a perfect fit. Instructions were very good. and it took me less than 30 minutes to accomplish. It works flawlessly.

I highly recommend these folks and their products.



by:
Kia Sedona

Took me 30 minutes to take 3 panels off my Kia Sedona and hook up the trailer electrical connection. Just like advertise.... NO CUTTING OR SPLICING. Easy and well made. Etrailer is my trailer go to place and I spread the word also.



by:

I love this product. It's plug-in-play operation is straight forward, easy to install with no splicing, and makes wiring foreign light assembles with separate turn signals and brakes effortless.



by:
2002 Kia Sedona

Very fast and easy installation.



by:
2003 Kia Sedona

Super fast and easy install.



by:
2005 Kia Sedona

Product with a good arrived in the mail in a timely manner everything was good very happy



by:

Easy ordering. Excellent product and really fast service.



by:
2005 Kia Sedona

No problem here.



by:
2005 Kia Sedona

very easy to do!



by:



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13
13

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

  • Parts Needed to Install a 7-Way Trailer Connector on a 2003 Kia Sedona
    After you have installed a 4-Way flat trailer wiring harness on your 2003 Kia Sedona, such as # C55309 you have some options on adding a 7-Way. If you need only the lights on the trailer to work then you would just need # 37185. The 4-Way plugs into it and you would ground the white wire to the vehicle frame. the other wires can be taped up and stowed out of the way. But if the trailer has electric brakes or needs the 12 volt accessory circuit to be functions I recommend # ETBC7 which...
    view full answer...
  • Install Video to Use for Trailer Wiring Kit that Fits 2005 Kia Sedona
    For your Kia Sedona we don't yet have an install video for the Curt # C55309. I have attached the installation instructions for you to check out and we are always here if you have any questions.
    view full answer...
  • Will the Curt T-Connector Wiring Harness have the Correct Connectors for a 2003 Kia Sedona
    I went out to the warehouse and pulled the T-Connector Wiring Harness, # C55309, for the 2003 Kia Sedona and produced a short video showing the connectors for you, see link. The passenger side connector is not larger than the drives side connector and should be exactly the same. You will need to go directly to the back of each taillight housing to locate the correct connectors on both sides of the vehicle.
    view full answer...
  • Troubleshooting Intermittent Trailer Light Functioning
    Sounds like the problem could be somewhere in the socket or bulb of your trailer if when you move the bulb in the socket it works temporarily. Almost makes me think there is corrosion in the sockets. Or the other most likely solution would be that the grounds are not adequate for the lights. I would recommend you check that the light assemblies are attached to a clean metal surface. Corrosion here will cause problems and should be cleaned as needed. Since you tested the 4-way of the Curt...
    view full answer...

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


Info for this part was:

Employee Joe V
Test Fit:
Joe V
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 Robert G
Expert Research:
Robert G
Employee Jameson C
Expert Research:
Jameson C
Employee Chris R
Video by:
Chris R

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