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  1. Custom Fit Vehicle Wiring
  2. CURT
  3. 4 Flat
  4. No Tow Package
  5. Trailer Hitch Wiring
  6. Vehicle End Connector
THIS ITEM IS NOT A FIT FOR
2012 Toyota RAV4
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CURT

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

Part Number: C75WR
In Stock
$77.44
Retail:$133.95
You Save: 42%
Custom Fit Vehicle Wiring
Not Confirmed to Fit

2012 Toyota RAV4

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etrailer Installation
We'll connect you with nearby partnered installers who know this exact setup.
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 C75WR 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 (4)
  • Q & A (0)
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CURT Custom Fit Vehicle Wiring - C75WR

Highlights

  • Custom Fit for Your Vehicle: Works with your vehicle's wiring
  • Plug-and-Play Install: T-connector plugs inline at tail lights—no cutting or splicing needed.
  • Tow-Ready Lighting: 4-pole flat harness powers trailer stop, turn, and tail lights.
  • Powered Converter Protection: Built-in module safeguards vehicle wiring from trailer load.
  • No Tow Package Needed: Adds trailer lighting even when factory tow wiring isn’t present.
  • Clean, Weather-Tight Fit: Vehicle-end connector keeps wiring secure and out of sight.

Features to know about

Installs Clean Without Cutting: Plug-In T-Connector Harness

Getting trailer lights wired up doesn’t have to mean splicing wires or chasing color codes. This Curt T-Connector plugs right into the factory taillight connectors, giving you a 4-pole flat trailer connector without cutting into the vehicle wiring. It’s a direct fit that keeps the install neat and easy.

Power for Reliable Trailer Lighting: Built-In Powered Converter

Trailer wiring can overload a vehicle’s light circuits if it’s not managed correctly. This harness includes a powered converter that draws power directly from the battery instead of the taillight circuits. That protects the vehicle electronics and gives the trailer lights a clean, consistent signal every time.

Ready for Basic Trailer Functions: 4-Flat Connector Output

The 4-flat connector is the standard plug for most small and midsize trailers. It runs the running lights, turn signals, and brake lights so you’re fully visible and legal on the road. The connector is molded and weather-resistant for long-term durability.

Adds Tow Capability Without a Factory Package: No Tow Package Needed

Even if the vehicle didn’t come with a factory tow package, this harness makes it ready to pull a trailer with proper lighting. Everything needed to power the trailer lights is built into the harness, so you can add towing function without extra factory wiring or dealer parts.

Specs

  • Image Description: Comparison image showing Curt T-Connector Vehicle Wiring Harness with 4-pole flat trailer connector options and labeled components for vehicle wiring compatibility.
  • Image Source: Comparison image showing Curt T-Connector Vehicle Wiring Harness with 4-pole flat trailer connector options and labeled components for vehicle wiring compatibility.

56465 CURT T-Connector Vehicle Wiring Harness with 4 Pole Trailer Connector

Installation Details C75WR Installation instructions

This Product Fits The Following Vehicles




Customer Satisfaction Score:

Ratings & Reviews

5.0

4 reviews
Review sort icon
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.

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Fast delivery and all required parts were included. Also no problem with my returning this item. (I ordered the wrong harness!)



by:

Great product. And even better customer service. I had a delivery issue and Josh handled it quickly and followed up after delivery to make sure I was happy. Would definitely recommend etrailer to everyone. Just for the record I ordered 3 other harnesses from other company's before ordering from here and none worked properly.


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

  • Does Curt T-Connector Vehicle Wiring Harness Interact With 2025 Ford F-150 Tremor Computer
    Hey Chris! The Curt T-Connector Vehicle Wiring Harness # C75WR will not interact with the computer on your 2025 F-150 Tremor. This completely bypasses all of those integrated systems. The converter gets power form the hot lead running to the battery and then the signals come through your tail lights where the T-connectors are attached. Are you adding an LED light bar under the tailgate or something else?
    view full answer...
  • Recommended Wiring Harness for a 2023 Ford F-150 w/out LEDs
    The only possible option we have that would work with your 2023 Ford F-150 without LED's is the Curt item # C75WR. This custom fit T-connector plugs in behind your tail lights but only works if your truck came from the factory with a 7-way connector.
    view full answer...
  • Trailer Hitch and Wiring for 2022 Ford F-150 Without Factory Tow Package
    Hi Alexander; assuming you have the factory step bumper you can use the Draw-Tite Ultra Frame Trailer Hitch Receiver # DT35MR you were looking at. For the wiring, I would check to see if you have the factory wiring harness plugged into the back of the dummy plug on your bumper. If you do you can pull the dummy plug and add the # HM40975. If it doesn't work as is, you may have to run it by the dealer to activate the tow package circuits. If you do not have any factory wiring we will have...
    view full answer...
  • Parts Needed To Add a 7-Way Connector and Brake Controller to a 2023 Ford F-150 XLT w/out a 7-Way
    Hey Bill. Since your 2023 Ford F-150 XLT didn't come with a factory 7-way you'll need two separate wiring harnesses to add one to your truck. The first one you'll need is a 4-way connector that's going to plug in behind your tail lights. You'll need to choose from one of the following options depending on what style your lights are and if you have backup sensors: Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector item # C75WR - Incandescent tail lights, no backup...
    view full answer...
  • Parts Needed to Add 7-Way and 4-Way to 2023 Ford F-150
    Hey Zack, for your 2023 Ford F-150 what you'd need to add both a 4-way and a 7-way would be the part # HM40975. This would plug into the round connector at the rear of your truck and would give you both connectors you need. If you don't have a round connector like what a 7-way needs to install let me know but the only way you'd be able to source that would be to get the intermediate wiring harness for the 7-way from a Ford dealer.
    view full answer...
  • Solution for 7-Way Wiring On 2023 Ford F-150 XLT
    Hello Emanuel; the # C56413 fits the 2015 - 2020 models of the F-150 so it won't work with your 2023. If you have a 7-way dummy plug with wiring plugged into the back of it you can use the 7- and 4-Pole Trailer Connector Socket # HM40975. If you don't have any kind of wiring the installation will be more extensive. You will have to start by adding a 4-way. You can choose from one of the following based on your lights: -Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer...
    view full answer...
  • Recommended Flat Towing Wiring Harness for a 2024 Ford F-150
    What a great question Howard. You should direct that request to Curt, Blue Ox, or Demco though. We don't make the wiring harnesses like the Curt item # C75WR you purchased, which does not have diodes in it. No one makes a plug and play for a 6-Way flat towing connection. The diodes included in the Roadmaster Smart Diode Kit for Variable Voltage LED Tail Lights item # RM38FR, or item # RM-152-1676-7 if you don't have LED lights, are installed to prevent feedback between a RV's electrical...
    view full answer...
  • 4-Flat Trailer Wiring Harness For A 2021 Ford F-150 With Existing Factory 7-Way
    When choosing the correct 4-flat wiring harness for your 2021 Ford F-150 that already has the factory 7-way I recommend The Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # C75WR. I like this harness because it is constructed using surface-mount technology that gives it a consistent, reliable performance. This harness will plug into your vehicle's wiring harness, which is located behind the driver's-side and passenger's-side tail lights. Just a quick note that...
    view full answer...
  • Can Brake Controller Install on 2021 Ford F-150 without Tow Package
    To install a brake controller on your 2021 Ford F-150 that does not have the factory tow package all you need is the 4-way kit part # C75WR, the # ETBC7 to covert it to a 7-way and wire in the brake controller and then a controller like the Brake EVN # TK63VR.
    view full answer...
  • Recommended Flat Tow Wiring Kit For a 2021 Ford F-150 Lariat with LED Tail Lights.
    I recommend the Roadmaster Universal Wiring Kit with Smart Diodes for Variable Voltage LED Tail Lights # RO44FR for flat towing your 2021 Ford F-150. These smart diodes are specifically designed to work with the LED tail lights on your F-150. Currently there is not a plug and play version available so the diodes will need to be spliced into the tail light wiring. Your F-150 does require a Battery Charge Line Kit # RM-156-25 be used when you are flat towing. This will keep the battery...
    view full answer...
  • Installing Curt 56465 Trailer Wiring Harness on 2021 Ford F150
    My contact at Curt confirms that each taillight assembly on the 2021 Ford F150 does indeed have two connectors, but their 56465 wiring harness which we sell as # C75WR will only fit one of them, as the connectors are different sizes.
    view full answer...

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


Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Jameson C
Expert Research:
Jameson C
Employee Lindsey S
Edited by:
Lindsey S
Employee Jeff D
Installed by:
Jeff D
Employee Wilson B
Updated by:
Wilson B
Employee Mike S
Written by:
Mike S

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