CURT 4-Way Flat Trailer Wiring Harness for Toyota RAV4 — Vehicle-Side 4-Pin Plug-and-Play, No Cutting

CURT 56434 is a vehicle-specific, plug-and-play 4-way flat trailer wiring harness engineered to add standard trailer lighting connections to compatible Toyota RAV4 models without cutting or splicing.

If your RAV4 didn’t come with factory trailer wiring, this CURT custom T-connector installs at the taillight assembly to give you a reliable 4-way flat socket for tail lights, brake lights and turn signals. Designed as a vehicle-specific harness, it uses OEM-compatible connectors and SMT circuitry to deliver durable electrical performance while keeping installation clean and reversible. The kit includes everything required to connect your trailer wiring and a dust cover to protect the socket when not in use.

How does this harness install on my vehicle?

Installation is plug-and-play: the CURT 56434 uses vehicle-matched connectors that plug into the factory taillight sockets, so you do not need to cut, splice, or solder factory wiring. The harness routes and secures along factory harness paths for a tidy, OEM-like fit.

• Plugs directly into taillight assembly using OEM-compatible connectors
• No cutting, splicing, or soldering of factory wires required
• Included mounting and routing hardware for a clean installation
• Dust cover protects the 4-way flat socket when unused

What lighting functions does the 4-way flat connector support?

The 4-way flat output delivers standard trailer lighting signals so your trailer’s tail lights, turn signals and brake lights operate in sync with your vehicle. A built-in tail light converter adapts vehicle circuits to the trailer’s wiring configuration for compatibility.

• Separate circuits for running lights, left and right turn signals, and brake lights
• Tail light converter ensures correct signal mapping to the trailer
• Compatible with common 4-way flat trailer plugs and adapters
• Durable connector housing resists moisture and debris

What makes CURT’s wiring more durable and reliable?

CURT builds the 56434 with surface-mount technology (SMT) circuitry and vehicle-grade materials to improve longevity and electrical stability. The design minimizes connection points and protects electronics from vibration and environmental exposure.

• SMT circuitry for consistent signal transmission and durability
• OEM-style connectors reduce loose or corroded contacts over time
• Weather-resistant connector and included dust cover for protection
• Manufactured for fitment on specified Toyota RAV4 model years (see application list)

Will this harness work with my RAV4 and do I need extra parts?

The CURT 56434 is made for specific Toyota RAV4 years—confirm fitment with the product application before purchase. For basic trailer lighting, no additional conversion modules are usually required; heavier accessories or brake controllers may need separate wiring or adapters.

• Vehicle-specific fit: verify compatibility with your model year in the application info
• Includes all wiring components necessary for a standard 4-way connection
• Brake controllers or powered accessories require separate installation steps
• Adapters or 4-way to 7-way plugs are available if your trailer uses different connectors

Who is this for: The CURT 56434 is aimed at Toyota RAV4 owners who want a fast, clean way to add trailer lighting without modifying factory wiring. It’s ideal for occasional towing of small trailers, boats, or utility trailers where a standard 4-way flat connection is sufficient, and for DIY installers who prefer OEM-style, reversible installations.