CURT 4‑Pin Trailer Wiring T‑Connector for Subaru Ascent Forester Outback Crosstrek — Plug‑and‑Play with Dust Cover

CURT 56040 is a vehicle‑specific plug‑in 4‑way flat wiring connector that adds a standard trailer socket to compatible Subaru Ascent, Forester, Outback and Crosstrek models without cutting or splicing the factory harness.

Built to match factory sockets and engineered for easy installation, this CURT custom wiring T‑connector gives you a reliable trailer‑ready connection in minutes. It mounts to the vehicle's OEM wiring interface and outputs a standard 4‑pin flat plug for tail lights, brake lights, and turn signals. The kit includes mounting hardware and a dust cover so the socket stays protected when not towing.

What makes this CURT harness different from universal trailer wiring?

This is a custom‑fit T‑connector designed specifically for select Subaru models, so it plugs directly into the vehicle’s OEM harness rather than requiring splicing. That reduces installation time and preserves factory wiring integrity.

• Vehicle‑specific pinout—fits designated Subaru models and years
• Plug‑and‑play installation—no cutting, soldering, or crimping
• Includes dust cover and mounting hardware for a clean, protected installation

How does the connector handle Subaru-to‑trailer signal differences?

The CURT 56040 includes an integrated tail light converter and SMT circuitry to match vehicle signals to standard trailer wiring. This ensures trailer brake lights, turn signals, and tail lamps operate correctly.

• Built‑in converter aligns vehicle signals to 4‑pin flat outputs
• Surface‑mount technology (SMT) circuitry enhances durability and signal stability
• Tested for compatibility and reliable performance under normal towing conditions

How simple is installation and what hardware comes with the kit?

Installation is straightforward: you locate the vehicle's OEM socket, unplug the factory mating connector, and plug in the CURT T‑connector. The kit includes the necessary mounting screws and a dust cap for the output socket.

• Plug into existing OEM vehicle socket—no wire cutting
• All mounting hardware included for quick, secure fitment
• Dust cover protects the 4‑way socket when not in use

Which Subaru models and scenarios is this wiring meant for?

This harness is matched to select Subaru Ascent, Forester, Outback and Crosstrek models (see vehicle application info before purchase). It’s ideal for owners who tow small trailers, carry bike racks that need lighting, or want a reliable 4‑pin connection for temporary towing setups.

• Designed for compatible Subaru models that feature the OEM connector location
• Perfect for light towing, utility trailers, boat trailers, and accessory lighting
• Maintains factory wiring and resale value by avoiding splices

Who is this for: The CURT 56040 is aimed at Subaru owners who want a factory‑friendly, easy to install trailer wiring solution. If you prefer a clean, reversible installation that preserves the OEM harness and provides a dependable 4‑way flat output for lights and signals, this plug‑in T‑connector is a practical, long‑lasting choice.