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  1. Custom Fit Vehicle Wiring
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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 # C45FV
Retail:$111.95
Our Price: $91.80
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. 1-800-940-8924 to order CURT custom fit vehicle wiring part number C45FV 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 (36)
  • Q & A (0)
  • Photos

CURT Custom Fit Vehicle Wiring - C45FV

  • Trailer Hitch Wiring
  • 4 Flat
  • Custom Fit
  • 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 in rear cargo area
    • Plug in T-connector
    • Run hot lead to car battery
  • Includes a powered tail light converter that connects directly to your battery to avoid overloading your 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: 3.0 amps per circuit
    • Tail lights: 6.0 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 trim access cover, scuff panels, and tail lights to access these connection points. Once you've plugged in the T-connector, run the hot lead to your car battery, which can be found in the engine compartment. 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 in an out-of-the-way location within your trunk.


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.


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.



56487 Curt T-Connector - Surface Mount Technology - 4 Wire

Installation Details C45FV Installation instructions

This Product Fits The Following Vehicles




Customer Satisfaction Score:


Customer Reviews

Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - C45FV

Average Customer Rating:  4.6 out of 5 stars   (36 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.

by:

It’s about as good as I get. Install of hitch required a second person and removing the muffler. I wish they made galvanized hitches which is the main reason for removing a star, already a little rust is showing. That is the way they are.



by:
2024 Mazda CX-5

works great on my mazda cx5. Had installed harness from mazda, never could get it to work. curt t connector was so much simpler to install and works the way it should



by:

Installed a 2” hitch and wiring harness on my new 2023 Mazda CX-5. Install went Great. The self help videos were Awesome, explained everything perfectly. All parts went in with no problem. Product is built really well and it fit perfect. Thank you.



by:

Fairly simple to install. I did some small modification to meet my needs. WATCH THE VIDEO. The written instructions are a bit messy.



by:
2023 Mazda CX-5

The green wire was too short. I had to add more wire to it so it would reach.
It is ok now.

Etrailer Expert

Katrina D.

1/4/2024

If you are needing some additional wiring, you can use part # 16-4B-1.



by:

I ordered the wrong trailer harness, so I have reordered and am returning the one I received.



by:
2023 Mazda CX-50

Kit was missing a lot of components. Fuse wire connectors no zip ties etc etc. and rear wire assembly was a foot short to reach other light assembly. Not good

Etrailer Expert

Brooke M.

9/15/2023

Oh my, I am so sorry to hear that! I have sent over your information to our customer service team and they will be getting in touch with about this.



by:

need to run power wire from 12V supply makes installation very hard,



by:
2023 Mazda CX-5

I installed this kit on a 2023 Mazda cx5. Plugged right into the factory harness in trunk. No splicing needed. Then just run positive to battery with fuse kit provided. Instructions and video are great.



by:

Very satisfied with your website. Second time ordering from the site. Order was delivered on the date shown when ordered.



by:
2023 Mazda CX-50

This harness was fantastic. This made a first time hitch install a breeze. The brake harness connectors were perfect and came with everything needed to complete a clean install. Very satisfied with everything I purchased to make this happen.



by:

Fit perfectly on the CX-50. The most difficult part was running the wire from the rear to the battery terminal. Total time took about 1.5 hrs but I’m excited to be able to haul my ATV around again! Would definitely recommend.



by:
2022 Mazda CX-5

it arrived quickly in good condition



by:

Great product. Worked exactly like des cribed



by:

Fit perfectly. The step by step video guide is most helpful and I knew exactly what to expect before I started the job. Thanks for the help



by:
2023 Mazda CX-5

Easy to install (other than pulling car apart!). Instructions were clear. It took me about 1 hour to disassemble the car, complete all the wiring, and re-assemble the car.



by:

It worked and the instructions were good.
Seemed
like a bit of overkill and overpriced for what it does.Running a wire to the battery is ridiculous.



by:

Great customer service along with step by step install videos



by:

Delivered in the same container as the hitch. Without any problems .



by:
2023 Mazda CX-5

easy setup



by:

Excellent customer service! Thank you S tacey.



by:

Quinn was spot on with my order!!!



by:
Mazda

Quick and easy install. Perfect fit for the Mazda CX-5.



by:

fast delivery.Fit like a glove!



by:

Fit well


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Show More Reviews

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

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Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jameson C
Expert Research:
Jameson C
Employee Joshua S
Video by:
Joshua S
Employee Thomas T
Video by:
Thomas T
Employee Chris R
Video Edited:
Chris R
Employee Wilson B
Updated by:
Wilson B
Employee Michael B
Installed by:
Michael B
Employee Jacob H
Test Fit:
Jacob H
Employee Ryan G
Test Fit:
Ryan G
Employee Sabrina W
Written by:
Sabrina W

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