Build Your Link ECU Installation the Right Way

Building a custom standalone ECU harness?

The Link ECU A Loom Medium – 2.5m gives you a professional starting point for wiring a compatible Link ECU into your vehicle. With the ECU connector already terminated and 2.5 meters of color-coded flying leads, you can build a clean custom engine harness without having to source and crimp every ECU terminal yourself.

It's an ideal solution for engine swaps, race cars, custom builds, and universal Link ECU installations.

2.5 Meters of Wiring for More Installation Flexibility

Harness length matters—especially when the ECU is mounted inside the cabin, behind the dashboard, or farther away from the engine.

The 2.5-meter medium-length loom provides plenty of wire to properly route the harness through the vehicle while allowing you to cut each circuit to the exact length required.

This makes it easier to create a clean installation without unnecessary splices or extensions.

Pre-Terminated ECU Connector

One of the most time-consuming parts of building an ECU harness is correctly terminating the ECU connector.

Link takes care of that for you.

The A Loom comes with the ECU-side connector professionally terminated, while the opposite end uses individual flying leads ready to be connected to your engine's sensors, injectors, ignition system, relays, solenoids, and other components.

Color-Coded Flying Leads

The individual wires are color coded to make identification and harness construction easier.

Using the correct Link ECU wiring documentation, your installer can route each circuit exactly where it needs to go.

This makes the A Loom an excellent foundation for a clean, serviceable custom harness.

Ideal for Custom Standalone ECU Installations

The Link ECU A Loom Medium is perfect for builds where a plug-in ECU or vehicle-specific harness isn't available.

Common applications include:

• Engine swaps
• Custom standalone ECU installations
• Turbocharged builds
• Naturally aspirated race engines
• K-Series swaps
• Honda and Acura builds
• Nissan and Infiniti builds
• BMW performance builds
• GM and LS swaps
• Drag cars
• Road-race cars
• Time-attack builds
• Custom motorsport wiring

Connect the Systems Your Engine Needs

Depending on your specific Link ECU and engine configuration, the A Loom can form part of the wiring system for functions such as:

• Fuel injectors
• Ignition coils
• Crank and cam sensors
• MAP sensor
• TPS
• Intake air temperature
• Coolant temperature
• Boost control
• VVT/VTC control
• Fuel pump control
• Cooling fan control
• Auxiliary inputs and outputs
• Engine protection sensors
• Switches and additional controls

Exact wire functions depend on the specific Link ECU being used.

Key Features

• Genuine Link ECU A Loom
• Medium 2.5-meter length
• Pre-terminated ECU connector
• Color-coded wiring
• Flying leads for custom termination
• Eliminates the need to individually crimp the main ECU connector
• Ideal for custom engine harness construction
• Excellent for engine swaps
• Suitable for street and motorsport applications
• Allows wiring to be cut and routed specifically for your vehicle
• Professional foundation for a custom Link ECU installation

Why Start With a Link ECU Loom?

A standalone ECU is only as reliable as the wiring connecting it to the engine.

Poor crimps, incorrect terminals, unnecessary splices, and poorly routed wiring can cause intermittent sensor readings, trigger errors, communication problems, and difficult-to-diagnose electrical issues.

Starting with a genuine Link ECU pre-terminated loom eliminates one of the most complicated portions of building the harness and gives your installer a clean foundation to work from.

Build It Once. Build It Clean.

Whether you're wiring a street car, K-swap, turbo build, or dedicated race car, the Link ECU A Loom Medium – 2.5m gives you the flexibility to build the harness around your vehicle instead of forcing your vehicle to fit a generic harness.

Pre-terminated. Color coded. 2.5 meters long. Ready for your custom build.

Important Compatibility Note

Link ECUs use different connector and loom configurations. Verify that the A Loom is correct for your specific Link ECU before ordering. Always follow the official wiring and pinout information for your ECU when constructing the harness.