CURT Quick Plug Trailer Brake Controller Wiring Harness for Toyota & Lexus — 24 in, 12‑Gauge

The CURT 51362 Quick Plug wiring harness lets you install a trailer brake controller in compatible Toyota and Lexus trucks and SUVs without cutting or splicing.

Designed for a plug-and-play connection, this vehicle-specific adapter bridges your factory brake controller socket to most CURT brake controllers. The harness fits select model years of the Toyota 4Runner, Land Cruiser, Sequoia, Tacoma, Tundra and Lexus GX/LX models, and provides a tidy, reliable way to add or replace a brake controller wiring pigtail. Built with 12-gauge wires, a protective slit-loom sleeve and included zip ties, the assembly is sized to allow flexible mounting while keeping wiring secure and out of sight.

How does this harness simplify brake controller installation?

Installation is plug-and-play: one end connects to the vehicle’s OEM brake controller socket and the other plugs into a compatible CURT brake controller. There’s no need to cut factory wiring, tap into circuits, or splice connectors, which reduces installation time and preserves the vehicle’s factory harness integrity.

• Vehicle-specific connector fits OEM brake controller socket exactly
• No cutting, splicing, or soldering required
• Comes with zip ties for a neat, secure installation
• 24-inch length for flexible controller placement

Which vehicles and CURT controllers work with this adapter?

The 51362 harness is made to match select years of Toyota 4Runner, Land Cruiser, Sequoia, Tacoma, Tundra and Lexus GX460/GX470 and LX470/LX570/LX600 applications. It is compatible with most CURT brake controllers that use the Quick Plug connector, including proportional, inertia and time-delay units.

• Fits specific Toyota and Lexus models — always verify fitment for your year and trim
• Compatible with CURT proportional, inertia and time-delay controllers using Quick Plug
• Works as a replacement harness or for new controller installations
• Useful for towing trailers equipped with electric brakes

What durability features protect wiring and ensure reliable braking power?

The harness uses heavy-duty 12-gauge conductors to maintain consistent power and signal integrity between vehicle, controller and trailer brakes. A slit-loom sleeve shields the wires from abrasion and crushing, and the supplied zip ties help keep the harness routed cleanly away from moving parts and hot surfaces.

• 12-gauge wires for dependable current and reduced voltage drop
• Slit-loom sleeve resists abrasion and helps prevent crushing damage
• Pre-measured 24-inch length for convenient routing and mounting
• Zip ties included to secure wiring behind dash or underhood areas

Can I use this harness in multiple towing setups or as a spare part?

Yes. Because it’s a vehicle-specific Quick Plug adapter, the 51362 is suitable both as a replacement harness and as the wiring connection for a new CURT brake controller installation. Its universal compatibility with CURT controllers that use the Quick Plug connector makes it a practical spare for drivers who tow different trailers or want a quick on-vehicle repair option.

• Works as a replacement or for new installations
• Useful to keep as a spare for downtime avoidance when towing
• Compatible with multiple CURT brake controller styles using Quick Plug

Who is this for: The CURT 51362 Quick Plug harness is aimed at Toyota and Lexus owners who want a fast, factory-friendly way to add or replace a trailer brake controller connection. It’s ideal for DIY installers who prefer plug-and-play solutions, fleet operators who need consistent, serviceable wiring, and anyone towing trailers with electric brakes who wants a durable 12-gauge harness and protected routing for reliable braking performance.