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Curt 56040 Custom 4-Way Flat Trailer Wiring Harness for Select Subaru Vehicles

Curt 56040 Custom 4-Way Flat Trailer Wiring Harness for Select Subaru Vehicles
Curt Custom 4-Way Flat Trailer Wiring Harness for Select Subaru Vehicles
 
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: $38.17
Part Number: 56040
Manufacturer: Curt MFG

Quantity in Stock :34

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Curt 56040 Custom 4-Way Flat Trailer Wiring Harness for Select Subaru Vehicles

Add a standard 4-way flat trailer connector to select Subaru vehicles using the factory OEM wiring socket. The plug-and-play harness includes a powered converter and eliminates cutting or splicing into the vehicle wiring.

Why Choose the Curt 56040 Wiring Harness?

The Curt 56040 is a vehicle-specific trailer wiring harness designed for select Subaru Ascent, Forester, Outback, Crosstrek, and XV Crosstrek models. It plugs directly into the vehicle's existing OEM wiring socket to provide a standard 4-way flat trailer connector.

An integrated powered tail-light converter uses surface-mount circuitry to provide reliable operation while protecting the vehicle's electrical system. The resulting 4-way connection supplies trailer tail lights, brake lights, and turn signals without cutting or splicing the factory wiring.

🔌 OEM Plug-In

Connects directly to the vehicle's existing factory wiring socket

🚦 4-Way Flat Output

Provides trailer tail light, brake light, and turn-signal circuits

⚡ Powered Converter

Circuit-protected converter provides compatible vehicle-to-trailer lighting operation

🛡️ Dust Cover

Included rubber cover helps protect the 4-way connector when not in use

Key Features & Benefits

  • Vehicle-Specific Wiring: Designed for select Subaru vehicles with the appropriate OEM wiring socket
  • 4-Way Flat Output: Provides connections for trailer tail lights, brake lights, and turn signals
  • Plug-and-Play Installation: Eliminates cutting, splicing, and soldering into factory vehicle wiring
  • Powered Converter: Integrated circuit-protected converter provides reliable trailer-light operation
  • Surface-Mount Technology: SMT circuitry helps reduce heat generation and improve durability
  • Battery Powered: Uses a vehicle battery connection to supply trailer-light power
  • 3.0-Amp Turn/Brake Circuits: Rated for up to 3.0 amps per turn and brake circuit
  • 6.0-Amp Tail-Light Circuit: Supports up to 6.0 amps for trailer tail and running lights
  • Included Dust Cover: Helps keep dirt and moisture out of the 4-way flat connector

Vehicle Fitment

  • 2009-2025 Subaru Forester - All Styles
  • 2026 Subaru Forester - Excluding Wilderness
  • 2010-2025 Subaru Outback - All Styles
  • 2013-2015 Subaru XV Crosstrek - Excluding Hybrid
  • 2016-2026 Subaru Crosstrek - All Styles
  • 2019-2026 Subaru Ascent - All Styles

⚠️ Battery Connection Required

Curt 56040 is a powered wiring harness and requires a connection to the vehicle battery. Always use the specified fuse protection and do not exceed the vehicle or wiring-harness circuit ratings.

Technical Specifications

Part Number56040
BrandCurt
Product TypeVehicle-Specific Trailer Wiring Harness
Output Connector4-Way Flat
Converter TypeCircuit-Protected Powered Converter
Electrical System Type3-Wire
Battery PoweredYes
Turn / Brake Circuit Rating3.0 Amps
Tail / Running Light Rating6.0 Amps
Vehicle ConnectionOEM Factory Socket
Cutting / Splicing RequiredNo
Product Weight0.75 lbs.
WarrantyOne-Year Limited Warranty

📦 What's Included

In The Package:
• Curt 56040 Custom Wiring Harness
• Integrated Powered Converter
• 4-Way Flat Trailer Connector
• Rubber Dust Cover
• Installation Hardware

🚗 Verify Vehicle Fitment

This is a vehicle-specific wiring connector. Confirm the exact Subaru model, model year, and factory wiring configuration before installation.



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