---
product_id: 307140083
title: "Curt Manufacturing 56083 for Select 450h, Lexus RX 350"
brand: "curt"
price: "A$70"
currency: AUD
in_stock: true
reviews_count: 5
category: "Curt"
url: https://www.desertcart.com.au/products/307140083-curt-manufacturing-56083-for-select-450h-lexus-rx-350
store_origin: AU
region: Australia
---

# Plug-and-play 4-pin connector No cutting or splicing needed Weatherproof dust cover included Curt Manufacturing 56083 for Select 450h, Lexus RX 350

**Brand:** curt
**Price:** A$70
**Availability:** ✅ In Stock

## Summary

> 🚗🔗 Tow Like a Pro, Plug in with Confidence!

## Quick Answers

- **What is this?** Curt Manufacturing 56083 for Select 450h, Lexus RX 350 by curt
- **How much does it cost?** A$70 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/307140083-curt-manufacturing-56083-for-select-450h-lexus-rx-350)

## Best For

- curt enthusiasts

## Why This Product

- Trusted curt brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Tailored for Lexus:** Custom-fit design ensures seamless integration with select Lexus models, guaranteeing reliable and secure connections every time.
- • **4-Way Flat Connector:** Supports trailer taillights, brake lights, and turn signals with a widely compatible 4-pin standard for versatile towing options.
- • **Ergonomic Grip Design:** Easy-to-handle tabs on top and bottom make connecting and disconnecting your trailer wiring a breeze, even on the go.
- • **Effortless Plug & Play:** No cutting, no splicing—just plug into your Lexus RX 450h or RX 350 factory wiring for instant towing readiness.
- • **Durable Weather Protection:** Includes a rubber dust cover to shield your connector from dirt, moisture, and corrosion—built to last through every season.

## Overview

The CURT 56083 custom wiring harness is a vehicle-specific, plug-and-play 4-pin trailer wiring connector designed for select Lexus RX 450h and RX 350 models. It eliminates the need for cutting or splicing by connecting directly to factory wiring, providing reliable trailer taillight, brake light, and turn signal functionality. Featuring an ergonomic design for easy handling and a protective dust cover for weather resistance, this harness ensures a durable and hassle-free towing setup.

## Description

A CURT custom wiring connector (sometimes called a T-connector) is a simple, plug-and-play electrical device that eliminates the need for cutting, splicing and soldering when installing vehicle-to-trailer wiring. Most vehicles do not come ready to tow. Unless your vehicle has a towing package, it is probably not equipped with a trailer wiring connector. This is where CURT's custom wiring connectors come into play. A custom wiring connector uses a single original equipment plug to plug into a special socket provided by your vehicle. Though this option is not available on every vehicle, some automotive manufacturers design their vehicles to be easily equipped for towing by supplying a socket, integrated into the vehicle's electrical system, to readily accept a custom wiring connector. With a CURT custom wiring connector, there is no need to tap into the taillight assembly because a special socket is already provided. This custom wiring connector provides a 4-way flat connector socket and is designed to be a custom wiring option for certain years of the Lexus RX 450h or Lexus RX 350 (to verify your vehicle compatibility, see the CURT application guide at ). CURT custom wiring connectors are designed to be long-lasting and simple to install. They come with dust covers to keep your connector clean when not in use and feature a one-year limited to give you peace of mind.

Review: On my 2014 Lexus RX350 I installed the wiring connector (Curt 56083 T-Connector) while installing a trailer hitch and after having removed the fascia. It is easier to install with the fascia removed, but it can be installed with the fascia in place. It is simple to install because it simply plugs in. The hardest part is removing the factory installed cover from the female receptacle. If you have the factory installed TOW PACKAGE from Lexus you do not need to read the rest of this review. The MOST IMPORTANT thing to realize, however, is that just because you have the female receptacle in front of the driver side rear bumper it does not mean that the female receptacle is actually connected to the Lexus wiring system. The female receptacle is ONLY connected to the Lexus wiring system if your vehicle came with the factory installed Lexus TOW PACKAGE. You need to check the new car window sticker that came with the vehicle to see if it includes the factory installed TOW PACKAGE or you can type your VIN number into an online Lexus database to see if it includes the factory installed TOW PACKAGE as an option that original owner paid for. If your vehicle does NOT include the factory installed TOW PACKAGE, then it is missing a tail light signal control module located behind the trunk liner on the passenger side of your vehicle. SURPRISE! If you remove the trunk liner on the passenger side you will see a connector just suspended by some black electrical tape. Just think about it. You paid $50,000 for a luxury SUV and Lexus was too cheap to include a tail light signal control module that probably would have cost them $10 to $20 to install at the time they assembled your vehicle. It gets even worse. Now you have to go back to the Lexus dealer and buy the tail light control module for $125, and the parts department will have no clue what or why you are asking to buy this control module. But wait, it still gets even worse! You get home and remove the trunk liner (30 to 60 minute task) and you realize there is no 25 cent screw in the support frame nor did Lexus include a 25 cent screw in the box with the tail light control module. Fortunately, I had the correct size metric screw in my screw collection. Alternatively, you can buy a generic tail light signal control module from Curt, but you have to make somewhat messy splices into your Lexus' wiring system. The first lesson from this tale is that just because you see a wire connector in your Lexus don't assume that it is actually connected to the wiring system. The second lesson is that just because you paid $50,000 for a luxury automobile, don't assume that the Lexus is going to give you a 25 cent screw for free!
Review: If you’re vehicle came with the option, this will plug right in. Prior to ordering, if you want to confirm the connections are there. Remove the splash guard under trunk. Look for a light grey cube with 4 wires going into it neatly clipped on the driver side close to bumper.

## Features

- EASY TO INSTALL. No cutting! No splicing! This trailer wiring harness plugs into existing factory wiring on your vehicle and equips it with a standard 4-pin trailer wiring connector for plugging in and towing a trailer.
- STANDARD CONNECTOR. The 4-flat trailer wiring can be used to connect trailer taillights, brake lights and turn signals. 4-way trailer wiring is popular on a wide variety of trailers, adding versatile towing options for your vehicle.
- VEHICLE-SPECIFIC. This vehicle-trailer wiring harness is designed for select models of the Lexus RX 450h or Lexus RX 350, ensuring the easiest possible installation and the most reliable wiring connection.
- EASY GRIP. Plugging in your trailer wiring and trailer lights is easy with the ergonomic design of this vehicle socket. It features tabs on the top and bottom for a better grip when plugging into your trailer or unplugging.
- DUST COVER. To promote long-lasting use and weather resistance, this 4-pin trailer wiring harness comes with a rubber dust cover. It easily fits onto the 4-way flat connector when not in use, protecting it against the outdoor elements and internal corrosion.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B002ERUZMK |
| Best Sellers Rank | #97,210 in Electronics ( See Top 100 in Electronics ) #127 in Car Wiring Harnesses |
| Brand | CURT |
| Customer Reviews | 4.8 4.8 out of 5 stars (448) |
| Date First Available | 15 September 2023 |
| Item Weight | 193 g |
| Item model number | 56083 |
| Manufacturer | Curt Manufacturing |
| Manufacturer Part Number | 56083 |
| Model | Custom Wiring |
| OEM Part Number | 56083 |
| Product Dimensions | 22.86 x 10.16 x 7.62 cm; 192.78 g |

## Product Details

- **Brand:** CURT
- **Connector type:** 4-way Flat
- **Item dimensions L x W x H:** 22.9 x 10.2 x 7.6 centimeters
- **Item weight:** 0.43 Pounds
- **Material:** Rubber

## Images

![Curt Manufacturing 56083 for Select 450h, Lexus RX 350 - Image 1](https://m.media-amazon.com/images/I/61JNR5ZwL4L.jpg)
![Curt Manufacturing 56083 for Select 450h, Lexus RX 350 - Image 2](https://m.media-amazon.com/images/I/71Jxu2aXnPL.jpg)
![Curt Manufacturing 56083 for Select 450h, Lexus RX 350 - Image 3](https://m.media-amazon.com/images/I/71djNGDyB0L.jpg)
![Curt Manufacturing 56083 for Select 450h, Lexus RX 350 - Image 4](https://m.media-amazon.com/images/I/71mEE5QVhIL.jpg)
![Curt Manufacturing 56083 for Select 450h, Lexus RX 350 - Image 5](https://m.media-amazon.com/images/I/71naFQQHPlL.jpg)

## Questions & Answers

**Q: Does this fit a 2016 RX350?**
A: Since the 2016 RX350, and other Lexus models, have had body style changes since the 2014 RX350 came on the market, I cannot assure you that it will fit.  The best action for Shariff to take is to call the vendor and get assurances from them that the hitch is compatible with the 2016 RX350 frame.Alan

**Q: Does this fit a 2009 Lexus RX350?**
A: I cannot answer. It worked great on my 2010 RX350.  However the body differnces between the 2010 and 2009 RX350s are obvious.  but I have no idea about the wiring changes lexus  (Toyota) made between 2009 and 2010 models.  This is just simple wiring so it means Lexus included the 4 diodes someplace in the 2010 and later models. Diodes are needed to isolate the turn signals from the brake lights.   (3A, 50V minimum rating)  In older vehicles I have installed hitches on, I installed my own diodes. it isn't difficult if one is good at soldering  and taping.  The  2010 RX 350  was the first vehicle I installed  a pre- wired plug in harness on.  previous vehicles  "hand rewired"  : 1978 VW Rabbit, 2002 Saturn, 2005 Ford escape ,2009 Subaru Forester.   Diodes installation is pretty straight forward. need 4 anode (triangle end) connect one each to left and right turn signal wires,  cathode (flat line) to right trailer wire, left to left trailer wire.  Brake needs 2 diodes both anodes to brake light wire, one cathode each to left and right trailer turn signal wires. Enjoy

**Q: Does this fit  2015 Lexus 450h ?**
A: I have a 2010 RX350 that has trailer prep package and fit perfectly.  If yours has the trailer prep package, I would think it would fit.  Check for the connector that is located on the drivers side, back of the car, behind the plastic cover on the underside behind the bumper.

**Q: Does this fit a 2013 rx350 f sport**
A: Worked on my 2014 rx350

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by R***E on 1 October 2016*

On my 2014 Lexus RX350 I installed the wiring connector (Curt 56083 T-Connector) while installing a trailer hitch and after having removed the fascia. It is easier to install with the fascia removed, but it can be installed with the fascia in place. It is simple to install because it simply plugs in. The hardest part is removing the factory installed cover from the female receptacle. If you have the factory installed TOW PACKAGE from Lexus you do not need to read the rest of this review. The MOST IMPORTANT thing to realize, however, is that just because you have the female receptacle in front of the driver side rear bumper it does not mean that the female receptacle is actually connected to the Lexus wiring system. The female receptacle is ONLY connected to the Lexus wiring system if your vehicle came with the factory installed Lexus TOW PACKAGE. You need to check the new car window sticker that came with the vehicle to see if it includes the factory installed TOW PACKAGE or you can type your VIN number into an online Lexus database to see if it includes the factory installed TOW PACKAGE as an option that original owner paid for. If your vehicle does NOT include the factory installed TOW PACKAGE, then it is missing a tail light signal control module located behind the trunk liner on the passenger side of your vehicle. SURPRISE! If you remove the trunk liner on the passenger side you will see a connector just suspended by some black electrical tape. Just think about it. You paid $50,000 for a luxury SUV and Lexus was too cheap to include a tail light signal control module that probably would have cost them $10 to $20 to install at the time they assembled your vehicle. It gets even worse. Now you have to go back to the Lexus dealer and buy the tail light control module for $125, and the parts department will have no clue what or why you are asking to buy this control module. But wait, it still gets even worse! You get home and remove the trunk liner (30 to 60 minute task) and you realize there is no 25 cent screw in the support frame nor did Lexus include a 25 cent screw in the box with the tail light control module. Fortunately, I had the correct size metric screw in my screw collection. Alternatively, you can buy a generic tail light signal control module from Curt, but you have to make somewhat messy splices into your Lexus' wiring system. The first lesson from this tale is that just because you see a wire connector in your Lexus don't assume that it is actually connected to the wiring system. The second lesson is that just because you paid $50,000 for a luxury automobile, don't assume that the Lexus is going to give you a 25 cent screw for free!

### ⭐⭐⭐⭐⭐ Review
*by P***E on 1 April 2024*

If you’re vehicle came with the option, this will plug right in. Prior to ordering, if you want to confirm the connections are there. Remove the splash guard under trunk. Look for a light grey cube with 4 wires going into it neatly clipped on the driver side close to bumper.

### ⭐⭐⭐⭐⭐ Review
*by M***I on 18 July 2023*

We used it to hook up lights from our vehicle to our utility trailer. Works like a charm, and saved tons of money, not having to get it installed at a garage.

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-02-27*