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 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 Lexus IS F, IS200t, IS250, IS300 and IS350
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
#1,410,658 in Automotive (See Top 100 in Automotive) #1,323 in Towing Hitch Wiring
Date First Available
August 1, 2012
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From the manufacturer
Wherever your work or play takes you
CURT offers custom trailer hitches, electrical products and a complete line of towing accessories to get you there with confidence and enjoy every mile of the journey.
CURT Custom Vehicle-Trailer Wiring Harness
Custom fit. Plug-and-play. Reliable power.
A CURT custom trailer wiring harness is the easiest way to equip your vehicle with the proper electrical connection for towing a trailer. Our custom wiring offers simple, plug-and-play convenience with no cutting or splicing required, and provides a reliable connection for powering your trailer lights.
Best of all, each CURT custom trailer wiring harness is made vehicle-specific for a unique make and model. This makes installation hassle-free and ensures optimal performance with your vehicle.
Key features of CURT trailer wiring
Simple, plug-and-play installation
Constructed with SMT circuitry
Provides a standard trailer wiring output, usually 4-way or 5-way flat
Dust cover included to keep connector clean when not in use
Installation of CURT custom vehicle trailer wiring
Two types of trailer wiring
CURT offers two types of custom trailer wiring: custom wiring harnesses and custom wiring connectors. Both are made for specific vehicles, and both require zero cutting or splicing.
Custom trailer wiring harnesses
A custom trailer wiring harness (also known as a ‘T-connector’) is designed to ‘T’ into your vehicle’s taillight assembly. This simply requires access to the taillight wiring.
Custom trailer wiring connectors
A custom wiring connector uses a single plug to plug into a designated OEM socket on the vehicle. Not all vehicles are equipped with this socket, but it does make installing very easy.
Each custom trailer wiring harness and connector is made for a specific make and model, featuring the necessary components to provide a standard trailer wiring output.
Selecting custom wiring
Whatever your lifestyle, choosing the right CURT custom trailer wiring harness for your vehicle is easy. Simply use your vehicle's year, make, model and style.
Benefits of CURT surface mount technology (SMT)
Minimum heat generation
The high-quality components used in our custom trailer wiring create very little resistance to reduce heat, limit voltage drop and extend the life of the circuits.
Optimum light intensity
SMT is manufactured with automated processes for maximum consistency and the highly efficient circuitry promotes optimum intensity and life for the trailer light.
Surface mount technology is able to better withstand shaking and vibrations, conditions that are common while towing, compared to traditional through-hole-mount tech.
If your vehicle is not equipped with wiring for towing a trailer, CURT custom wiring is the ideal solution. A custom wiring harness -- also called a T-connector -- is a simple, plug-and-play electrical device that plugs into your automotive electric system and provides a standard, universal trailer wiring connection. This is done using two or more vehicle-specific, OEM-compatible connectors to plug into the taillight assembly, eliminating the need for cutting, splicing and soldering during installation. Custom wiring harnesses are made vehicle-specific, and while they are not available for all vehicles, they do offer one of the fastest, easiest and most secure ways to wire a vehicle for towing. This particular plug-in harness provides a 4-way flat connector socket and is designed to be a custom wiring harness to fit certain years of the Lexus IS F, IS200t, IS250, IS300 and IS350 (to verify your vehicle compatibility, see application info). It comes with all necessary wiring components to establish a reliable trailer wiring connection, as well as a dust cover to keep the connector clean when not in use. You have a picture in mind of your next destination -- maybe it's the boat landing at your favorite fishing spot, maybe it's a campsite that overlooks one of nature's masterpieces, or maybe it's the next big jobsite. However, turning that picture into a reality takes more than just daydreaming. It takes a solid connection and the right amount of power. CURT custom wiring is made with some of the most sophisticated technology in the industry and is designed to install with ease, giving you a long-lasting electrical connection for your towing hitch setup.
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5.0 out of 5 stars
Reviewed in the United States ?? on August 2, 2016
Correct harness easy install
1.0 out of 5 stars
I have 2016 Lexus RX350 with no trailer package, ...
Reviewed in the United States ?? on August 12, 2016
I have 2016 Lexus RX350 with no trailer package, and after reading all the reviews, and the Amazon check fit said is work with my suv. Sadly after receiving the item and install as instructions. All lights work except running light. I tested and retest, it doesn't work. Lucky it was purchased from Amazon, returned was the least of my problems.
1.0 out of 5 stars
Failed after 1st use
Reviewed in the United States ?? on December 16, 2020
Failed after 1st use. The left signal is not working but all others are good. Don't buy it!
1.0 out of 5 stars
Does NOT fit an ES350 Lexus as the catalog states ...
Reviewed in the United States ?? on January 18, 2017
Does NOT fit an ES350 Lexus as the catalog states it does. Further investigation with the manufacture confirms not for ES.
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