Includes Everything Pictured:
Custom Wiring Harness, 4-Way Flat Output (Plug & Play)
Dual-Output Electrical Adapter (Adds 7-Way RV Blade to 4-Way Flat)
Trailer Brake Controller Wiring Kit (duplex undercar wires, circuit breakers, terminals & ring connectors)
30-Amp Universal Circuit Breaker
Discovery NEXT Trailer Brake Controller Time-Delay
Universal Trailer Brake Controller Harness with Pigtails
Installation Hardware (if required)
Installation Instructions (if required)
Installation Schematics & Diagrams (if required)
This Trailer Wiring Harness Fits The Following Vehicles:
- 2020 - 2025 Toyota Highlander All Models
CURT 56452 Vehicle-Side Custom 4-Pin Trailer Wiring Harness (QTY 1)
Manufactured by: Curt
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 Toyota Highlander (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..
Features:
- Plugs into vehicle tail light assembly to provide a 4-way flat socket
- Simple plug-and-play design eliminates the need for cutting or splicing
- 4-way flat output connects tail lights, brake lights and turn signals
- Equipped with tail light converter for vehicle-trailer compatibility
- Constructed with SMT circuitry for better performance and durability
- Dust cover included to keep connector clean when not in use
- Backed by a limited one-year warranty
CURT 57672 Dual-Output 4-Way Flat Vehicle-Side to 7-Way RV Blade Trailer Wiring Adapter (QTY 1)
Manufactured by: Curt
There are several different types of connectors used to supply power from a tow vehicle's electrical system to a trailer's wiring system Some trailers only need the bare essentials -- running lights, brake lights and turn signals -- while others require a connection for reverse lights, electric brakes and auxiliary power With connectors ranging from simple to complex, it may be the case that the connection between your vehicle and your trailer is not a perfect match.
For example, your truck may be equipped with a 6-way round socket, but your trailer may have a 4-way flat plug For this very common problem, CURT offers a quick and simple solution in the form of an electrical adapter An adapter is an electrical device that allows a connection to be made between a mismatched trailer plug and vehicle socket.
It easily plugs in your vehicle's electrical socket and usually requires no additional wiring CURT offers an array of adapters to accommodate most types of plugs and sockets, including 4-way flat, 4-way round, 5-way flat, 6-way round, 7-way RV blades and more This special dual-output electrical adapter is actually designed to adapt a 4-way flat vehicle socket to fit multiple trailer plugs, including a 4-way flat and a 7-way RV blade connector.
Some manual wiring is required This multipurpose socket also comes with dust covers, a mounting bracket and all necessary mounting hardware for a complete installation All CURT wiring and electrical products come with a one-year limited warranty to give you the assurance you need to tow with confidence..
Features:
- Adapts a 4-way flat socket to fit 4-way flat and 7-way RV blade trailer plugs
- 4-way flat output connects tail lights, brake lights and turn signals
- 7-way connects tail, brake, reverse, turn signals, brakes and auxiliary power
- Dust covers included to keep connectors clean when not in use
- Slit loom keeps wires contained and well protected
- Metal bracket securely mounts wiring to the vehicle or trailer hitch
CURT 51500 Electric Trailer Brake Controller Wiring Kit (QTY 1)
Manufactured by: Curt
It takes a lot of power to stop a moving trailer, especially when that trailer is hauling livestock, construction materials, industrial equipment or other heavy-duty cargo Play it safe when you tow and give your trailer brakes the control they need with a CURT trailer brake controller and brake controller harness This brake controller wiring kit is designed for vehicles that do not have an included towing prep package.
It includes cables, ring terminals, cable ties and a circuit breaker to splice into your vehicle's wiring system and allow installation of a CURT trailer brake controller This wiring kit is compatible with systems with up to eight brakes..
Features:
- For tow vehicles not equipped with factory tow package wiring
- Compatible with 2, 4, 6 or 8-brake systems (1-4 axles)
- Designed for use with CURT quick plugs #51515 or #51516
- Brake controller and trailer connector are not included
CURT 58361 30-Amp Universal Circuit Breaker (QTY 1)
Manufactured by: Curt
Whether you're a contractor on your way to the jobsite or just a casual fisherman heading to the boat landing, you need working trailer lights to tow safely and legally For any towing setup, CURT offers quality wiring components, including complete wiring kits, circuit breakers, wiring connectors and more This universal circuit breaker is rated for 30 amps and recommended for applications where over-current protection is required..
Features:
- Recommended for applications where over-current protection is required
CURT 51126 Discovery NEXT Electric Trailer Brake Controller, Time-Delay, Fully Adjustable, Low Profile, 2-4 Axles, Plug-and-Play (QTY 1)
Manufactured by: Curt
Introducing the CURT Discovery NEXT, a powerful, compact, and user-friendly brake controller designed to ensure reliable operation of your electric trailer brakes right from the comfort of your vehicle's cabin With its sleek and modern design, as well as a low-profile bracket for improved clearance, this controller delivers exceptional control Manage the braking system of 2-8 trailers at a time, accommodating 1-4 axles, with ease thanks to its fully adjustable settings that seamlessly adapt to your specific vehicle-trailer configuration.
The Discovery NEXT represents an upgraded and enhanced iteration of our highly regarded Discovery brake controller It boasts compatibility with a wide range of brake systems, including low-volt, PWM, ABS, cruise control, and electric over hydraulic brakes Its slim profile strikes a balance between functionality and modern aesthetics, ensuring powerful brake control is right at your fingertips without overwhelming your vehicle's dashboard.
Stay informed about your brake settings at a glance, courtesy of the LED display that showcases power adjustments in precise 0.5 increments The display also provides comprehensive full-text diagnostics, simplifying troubleshooting, while the adjustable brightness guarantees optimal visibility for towing during any time of the day or night Moreover, the included unique mounting bracket further enhances clearance, allowing for an unobtrusive installation.
Equipped with a time-delay feature, the Discovery NEXT brake controller offers fully adjustable power and ramp time to achieve precise control With a selection of 10 gain settings and nine load settings, you can finely calibrate the controller to align perfectly with your specific towing requirements The ramp-up progress is clearly indicated through LED indicators, and the brightness is adjustable to suit the conditions of daytime or nighttime towing..
Features:
- Slim, low-profile design for a functional, modern aesthetic
- Unique bracket system for improved dash clearance
- Fully adjustable power and ramp time
- Operates 2-8 trailer brakes at a time (1-4 axles)
- No internal moving parts and no leveling required
- 10 gain settings and 9 load settings to adapt to various driving conditions
- LED display shows power adjustments in 0.5 increments
- Day-night mode and adjustable brightness for optimal visibility
- Mounts anywhere in the vehicle, at any angle
- Full-text diagnostics for easier troubleshooting
- Compatible with low-volt, PWM, ABS, cruise control and electric over hydraulic
- Auto-sleep mode prevents battery drain after five minutes of idle time
- Plug-and-play install with vehicle-specific quick plug harness (sold separately)
CURT 51515 Quick Plug Universal Electric Trailer Brake Controller Wiring Harness (QTY 1)
Manufactured by: Curt
It takes a lot of power to stop a moving trailer, especially when that trailer is hauling livestock, construction materials, industrial equipment or other heavy-duty cargo Play it safe when you tow and give your trailer brakes the control they need with a CURT trailer brake controller and brake controller harness CURT quick plug brake controller harnesses make the installation of your brake controller easy.
This brake controller harness comes with pigtails to splice into your vehicle's electrical system When a CURT quick plug harness is not a compatible option for your vehicle, a quick plug with pigtails is the next best thing These harnesses feature a quick plug end to easily snap into your CURT brake control and colored wires to coordinate with the appropriate electrical function.
This universal splice-in harness comes with a protective slit loom sleeve and can easily be installed using the CURT universal wiring kit #51500 It is designed to be compatible with a variety of vehicles that are not equipped with a factory plug for a brake control..
Features:
- Splices into a vehicle for a quick plug brake controller connection
- Compatible with any CURT brake control
- Wire colors match standard brake controller harnesses
- Includes 24" of 12 gauge wire for flexible installation
- Slit-loom sleeve keeps wires contained and protected
List of Fitment Years:
2025, 2024, 2023, 2022, 2021, 2020
Hitches Near Me: We operate out of several warehouses across the country, ensuring faster delivery to your location.
Order today or message us for more information
