---
product_id: 3783303
title: "CURT 56217 Vehicle-Side Custom 4-Pin Trailer Wiring Harness, Fits Select Toyota Highlander, Lexus RX350"
brand: "curt"
price: "KD 11.18"
currency: KWD
in_stock: true
reviews_count: 8
category: "Curt"
url: https://www.desertcart.com.kw/products/3783303-curt-56217-vehicle-side-custom-4-pin-trailer-wiring-harness
store_origin: KW
region: Kuwait
---

# Plug-and-play 4-pin connector No cutting or splicing needed Weatherproof dust cover CURT 56217 Vehicle-Side Custom 4-Pin Trailer Wiring Harness, Fits Select Toyota Highlander, Lexus RX350

**Brand:** curt
**Price:** KD 11.18
**Availability:** ✅ In Stock

## Summary

> 🚗🔗 Plug in. Tow out. Own the road with confidence.

## Quick Answers

- **What is this?** CURT 56217 Vehicle-Side Custom 4-Pin Trailer Wiring Harness, Fits Select Toyota Highlander, Lexus RX350 by curt
- **How much does it cost?** KD 11.18 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.kw](https://www.desertcart.com.kw/products/3783303-curt-56217-vehicle-side-custom-4-pin-trailer-wiring-harness)

## 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

- • **Built for Durability:** Surface mount technology ensures optimal light intensity and heat resistance for reliable, long-lasting performance.
- • **Tailored for Your Ride:** Custom-fit design means perfect compatibility—no guesswork, just confident towing every time.
- • **Weather-Resistant Protection:** Keep your connection pristine with a snug rubber dust cover that guards against dirt, moisture, and corrosion.
- • **Universal 4-Way Flat Connector:** Seamlessly power your trailer’s tail, brake, and turn signals with the industry-standard 4-pin wiring harness.
- • **Effortless Plug-In Installation:** Skip the tools and wiring headaches with a direct OEM-compatible plug that fits select Toyota Highlander and Lexus RX350 models.

## Overview

The CURT 56217 Vehicle-Side Custom 4-Pin Trailer Wiring Harness offers a hassle-free, no-cut installation solution tailored for select Toyota Highlander and Lexus RX350 models. Featuring a standard 4-way flat connector, it reliably powers trailer lights with advanced surface mount technology for durability and optimal performance. Its weatherproof rubber dust cover ensures long-term protection, making it the perfect upgrade for professional-grade towing readiness.

## Description

CURT custom wiring connectors are the easiest way to outfit your vehicle with a CURT trailer wiring connection. They are built with some of the most advanced technology in the industry, and each one is custom-fitted to work with a specific make and model. Some automotive manufacturers install a special socket on the vehicle to be used for vehicle-to-trailer wiring. Although this special socket is not equipped on every vehicle, a CURT custom wiring connector -- also called a T-connector -- utilizes the socket for simple, stress-free installation. Rather than requiring you to cut, splice and solder into your vehicle's wiring system, the custom wiring connector uses a single OEM-compatible plug and instantly provides a standard, universal vehicle-to-trailer wiring connection, typically in the form a 4-way flat. All CURT custom wiring connectors are made vehicle-specific for the easiest possible installation and the best fit. This particular plug-in connector provides a 4-way flat socket and is designed to be a custom wiring option for certain years of the Toyota Highlander and Lexus RX350 (factory tow package may be required; to verify your vehicle compatibility, see application info). It comes with all necessary hardware to establish a solid connection. It also comes with a dust cover to keep the connector socket clean when not in use. To ensure long-lasting reliability, all CURT custom wiring connectors are thoroughly tested for optimal functionality. Stress is the last thing you should feel when towing a trailer -- whether you're hauling your RV to that favorite camping destination, your ATVs up to the hunting grounds or your fishing boat to the new hidden hotspot. At CURT, we think your towing equipment should add to the enjoyment of your experience, not detract from it.

Review: Works as it should. Good quality. - one of the youtube video's on how to use this was wrong on where the parts go. It showed that the parts all went in the back of the SUV. The unit that controls the lights goes up under the dash. There is an multi pin plug up there. Then that unit has to be grounded. I took a nut off a bolt sticking out, clamped a bigger ring connecter and use that as a ground. Also as other people have stated, there is a fuse that goes in the unit itself, and one that has to be put in the fuse box under the hood of the car. It is number 29 in this car and is supposed to be 30 amps. I used a 20 amp as that is the highest I had at the time. I will get 30 amp fuses in case this one blows out. The pigtail goes in the back. There are videos on youtube to show how to get to that. That part is very simple, but you need to know how to get to the plug. Otherwise, it is simple to do it. The hardest part is using zip ties to hold the wires up out of the way by the brake pedal.
Review: Where to put the 10 Amp fuse in the vehicle is the only confusing part of the instructions. - So as most folks said this is very easy to install. I installed it in a 2015 Highlander Hybrid. Plenty of videos on the Internet as to how to reach the wiring in the back of the vehicle so check those out. But there are a few things you should know and reading this should make it easier for you than it was for me. Once you get to the point where you have removed the pieces and hooked up the two connectors, you have two decisions to make. First is whether to drill a hole for the ground wire screw provided or use a screw or bolt already in the vehicle. I chose to drill the hole, sand and that's the best option in my opinion because you don’t need to sand any nuts or screws and you can put that screw where you want it--there are plenty of safe places to drill in the rear near where the adapter plugs in. The second decision is where to put the 4-pin plug (inside or outside the vehicle). I think the best option is to leave it inside the vehicle unless you will be using it a lot. You run it to the compartment where the spare tire tools are. I ran it through the piece of plastic that goes over the battery--see the picture (non-hybrid owners will not have a battery in the back), When you leave it there, it’s easy to get to--you never see it unless you use it and you don't need to worry about running it under the car and mounting it somewhere. Also, if it is outside the vehicle it can corrode, the wires can be cut, it can be damaged, etc. The only downside is it sticks out the back of the vehicle when in use, so if you are anal and don't want to see the wires then run it under and mount it. If you do run it under, the hybrid drain hole is in a different place from regular Highlanders, or at least it was from the one I saw in the video for a non-hybrid. In a hybrid, it is between the battery and the rear at the bottom—you’ll probably need a light to see it. I was confused by a video of a non-hybrid which showed the drain plug against the back of the vehicle (i.e., the hole points out the rear of the vehicle rather than down to the pavement as it is in the hybrid). As to the 10 amp fuse (the one that goes in the vehicle not the inline one in the adapter) the instructions say to consult the manual as to where to put it (there were two in my kit you only need one plus the inline one so you’ll use 2 out of the 3). Well, I could not find where in the manual to put the "trailer" fuse, but I watched the etrailer video and kind of "guessed" where it was from that. First, the fuse box is under the engine hood and it’s the main box (there is more than one) --see the picture as to where that fuse goes. There were only 2 possible places for it and it's the one closest to the front of the vehicle. Next, you must test your installation. If you do not have a trailer to hook up to it (or even if you do) there is a very cheap (under $7) and easy solution. Do yourself a HUGE favor and buy a tester. They are cheap and I don’t care if you are an electrician and have all kinds of ways to test it, this is so easy using a generic tester is not worth the extra trouble to save $7. I bought the SeaSense EZ TROUBLESHOOTER Circuit Tester here on desertcart and highly recommend it. Did I mention you should buy the tester? Finally, once you reconnect the negative post on the battery and clean up, you’ll try to close the hatch door with the button on the door, it is probably going to beep at you and not close. The reason is that you disconnected the battery (assuming you do during installation and you should) with the door open the door "open/close sensor" won’t know whether it's open or closed hence the beeping. Close the door manually and it should work fine after that.

## Features

- EASY TO INSTALL — No cutting! No splicing! This trailer wiring harness kit plugs into existing factory wiring on your vehicle and equips it with a standard, rear 4-pin trailer wiring connector for plugging in and towing a trailer
- STANDARD CONNECTOR — This plug-in 4-flat trailer wiring can be used to connect trailer tail lights, brake signal lights and turn signals. 4-way trailer light wiring is popular on a wide variety of trailers, adding versatile towing options for your vehicle
- VEHICLE-SPECIFIC — This aftermarket, vehicle-trailer wiring harness is designed for select years of the Toyota Highlander and Lexus RX350 (factory tow package may be required)
- RELIABLE POWER — This 4-way trailer wiring harness is built with surface mount technology. This type of circuitry generates less heat, optimal light intensity and durable performance
- DUST COVER — To promote long-lasting use and weather resistance, this 4-pole trailer lighting wire 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

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00ID7EDRI |
| Best Sellers Rank | #35,776 in Automotive ( See Top 100 in Automotive ) #75 in Towing Hitch Wiring |
| Brand | CURT |
| Connector Type | 4-way Flat |
| Customer Reviews | 4.7 4.7 out of 5 stars (1,602) |
| Date First Available | February 11, 2014 |
| Exterior | Painted |
| Global Trade Identification Number | 00612314562176 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 13.8 ounces |
| Item dimensions L x W x H | 9 x 4 x 3 inches |
| Item model number | 56217 |
| Manufacturer | Curt Manufacturing |
| Manufacturer Part Number | 56217 |
| Material | Rubber |
| Model | Custom Wiring |
| OEM Part Number | BKDK56217 |
| Product Dimensions | 9 x 4 x 3 inches |
| Recommended Uses For Product | trailer wiring |
| UPC | 612314562176 |

## Product Details

- **Brand:** CURT
- **Connector Type:** 4-way Flat
- **Item Weight:** 0.86 Pounds
- **Item dimensions L x W x H:** 9 x 4 x 3 inches
- **Material:** Rubber

## Images

![CURT 56217 Vehicle-Side Custom 4-Pin Trailer Wiring Harness, Fits Select Toyota Highlander, Lexus RX350 - Image 1](https://m.media-amazon.com/images/I/71i4jALwiRL.jpg)
![CURT 56217 Vehicle-Side Custom 4-Pin Trailer Wiring Harness, Fits Select Toyota Highlander, Lexus RX350 - Image 2](https://m.media-amazon.com/images/I/81pfQZFqhrL.jpg)
![CURT 56217 Vehicle-Side Custom 4-Pin Trailer Wiring Harness, Fits Select Toyota Highlander, Lexus RX350 - Image 3](https://m.media-amazon.com/images/I/A10wck2XOqL.jpg)
![CURT 56217 Vehicle-Side Custom 4-Pin Trailer Wiring Harness, Fits Select Toyota Highlander, Lexus RX350 - Image 4](https://m.media-amazon.com/images/I/81pSMI9mIWL.jpg)
![CURT 56217 Vehicle-Side Custom 4-Pin Trailer Wiring Harness, Fits Select Toyota Highlander, Lexus RX350 - Image 5](https://m.media-amazon.com/images/I/61KMYxigWNL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works as it should. Good quality.
*by G***E on September 19, 2025*

one of the youtube video's on how to use this was wrong on where the parts go. It showed that the parts all went in the back of the SUV. The unit that controls the lights goes up under the dash. There is an multi pin plug up there. Then that unit has to be grounded. I took a nut off a bolt sticking out, clamped a bigger ring connecter and use that as a ground. Also as other people have stated, there is a fuse that goes in the unit itself, and one that has to be put in the fuse box under the hood of the car. It is number 29 in this car and is supposed to be 30 amps. I used a 20 amp as that is the highest I had at the time. I will get 30 amp fuses in case this one blows out. The pigtail goes in the back. There are videos on youtube to show how to get to that. That part is very simple, but you need to know how to get to the plug. Otherwise, it is simple to do it. The hardest part is using zip ties to hold the wires up out of the way by the brake pedal.

### ⭐⭐⭐⭐⭐ Where to put the 10 Amp fuse in the vehicle is the only confusing part of the instructions.
*by A***N on October 21, 2020*

So as most folks said this is very easy to install. I installed it in a 2015 Highlander Hybrid. Plenty of videos on the Internet as to how to reach the wiring in the back of the vehicle so check those out. But there are a few things you should know and reading this should make it easier for you than it was for me. Once you get to the point where you have removed the pieces and hooked up the two connectors, you have two decisions to make. First is whether to drill a hole for the ground wire screw provided or use a screw or bolt already in the vehicle. I chose to drill the hole, sand and that's the best option in my opinion because you don’t need to sand any nuts or screws and you can put that screw where you want it--there are plenty of safe places to drill in the rear near where the adapter plugs in. The second decision is where to put the 4-pin plug (inside or outside the vehicle). I think the best option is to leave it inside the vehicle unless you will be using it a lot. You run it to the compartment where the spare tire tools are. I ran it through the piece of plastic that goes over the battery--see the picture (non-hybrid owners will not have a battery in the back), When you leave it there, it’s easy to get to--you never see it unless you use it and you don't need to worry about running it under the car and mounting it somewhere. Also, if it is outside the vehicle it can corrode, the wires can be cut, it can be damaged, etc. The only downside is it sticks out the back of the vehicle when in use, so if you are anal and don't want to see the wires then run it under and mount it. If you do run it under, the hybrid drain hole is in a different place from regular Highlanders, or at least it was from the one I saw in the video for a non-hybrid. In a hybrid, it is between the battery and the rear at the bottom—you’ll probably need a light to see it. I was confused by a video of a non-hybrid which showed the drain plug against the back of the vehicle (i.e., the hole points out the rear of the vehicle rather than down to the pavement as it is in the hybrid). As to the 10 amp fuse (the one that goes in the vehicle not the inline one in the adapter) the instructions say to consult the manual as to where to put it (there were two in my kit you only need one plus the inline one so you’ll use 2 out of the 3). Well, I could not find where in the manual to put the "trailer" fuse, but I watched the etrailer video and kind of "guessed" where it was from that. First, the fuse box is under the engine hood and it’s the main box (there is more than one) --see the picture as to where that fuse goes. There were only 2 possible places for it and it's the one closest to the front of the vehicle. Next, you must test your installation. If you do not have a trailer to hook up to it (or even if you do) there is a very cheap (under $7) and easy solution. Do yourself a HUGE favor and buy a tester. They are cheap and I don’t care if you are an electrician and have all kinds of ways to test it, this is so easy using a generic tester is not worth the extra trouble to save $7. I bought the SeaSense EZ TROUBLESHOOTER Circuit Tester here on Amazon and highly recommend it. Did I mention you should buy the tester? Finally, once you reconnect the negative post on the battery and clean up, you’ll try to close the hatch door with the button on the door, it is probably going to beep at you and not close. The reason is that you disconnected the battery (assuming you do during installation and you should) with the door open the door "open/close sensor" won’t know whether it's open or closed hence the beeping. Close the door manually and it should work fine after that.

### ⭐⭐⭐⭐⭐ Easy & inexpensive -- but need 30a low profile mini fuse for Hybrid
*by H***N on May 28, 2025*

If you are a hesitant DIY'er, don't be. It really is as easy to install as their marketers claim. I read the directions, watched the CURT installation video, and the U-Haul installation video (as mentioned in other reviews), and aside from a final step, I was done in 30 minutes. And I've never installed any kind of wired vehicle product before. The Toyota dealer wanted over $200 just for the OEM wiring harness, plus installation fees. I found an OEM option for $155, but that would also be self-installed. Instead, I bought this CURT model, installed it myself, and saved $120+. One MAJOR note: I have a 2018 Highlander Hybrid, and I needed a 30a fuse, not a 10a like the non-hybrid Highlanders. The kit comes only with 10a fuses, and my Highlander did not have a spare 30a. A quick run to the auto parts store solved that issue. I'm not taking off any stars for this product, however, because it specifically says it is for *some* models of the Highlander, not for all of them. One tip: take the cover off of the fuse housing and bring it into the auto parts store. The cover has spare fuses stored in it, and you can match the size of the fuse exactly. Or save yourself the trip and search for "30 Amp Low Profile Mini Car Fuses" and add them to your Amazon order.

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*Product available on Desertcart Kuwait*
*Store origin: KW*
*Last updated: 2026-03-02*