JEM-Sport – COMPLETE 2.3L EcoBoost Swap Wiring Harness

JEM-Sport – COMPLETE 2.3L EcoBoost Swap Wiring Harness

Looking for a Ford control pack solution or a plug-and-play wiring kit for your 2.3L EcoBoost crate engine swap? This is it.

The JEM-Sport 2.3L Complete Swap Wiring Harness is a full plug-and-play wiring solution designed to run any 1st Gen 2.3L EcoBoost in any chassis — cleanly, reliably, and without the guesswork. Compatible with the 2015–2023 Mustang EcoBoost, Explorer, Focus RS, MKC, and the Ford Performance 2.3L crate engine.

This kit includes the chassis-side wiring harness and fuse box, as well as the engine-side wiring harness — everything you need to run your EcoBoost engine. Every wire, pin, and connector is brand new, no exceptions.

The EcoBoost ECU has two main connectors — one primarily for the engine harness, and one for power distribution and chassis connections. This harness covers both, terminated to the OEM Ford 4-cylinder EcoBoost ECU/PCM. It is designed around the 2015–2017 Mustang ECU connectors.

Designed with cabin ECU mounting in mind, the harness routes your ECU inside the car rather than the engine bay, keeping it protected and accessible.

ECU Options: You can add a JEM-Sport pre-programmed, PATS-deleted ECU at checkout — ready to run right out of the box. These are brand new Ford units, though in high-demand cases a refurbished and tested ECU may be substituted. It does save money to purchase the ECU and harness together, but the pre-programmed 2.3L ECU is also available separately from JEM-Sport. Alternatively, you can send in your own 2.3L ECU for the same programming via JEM-Sport’s PATS delete service.

This harness will allow connections for these key functions and more:

• Power distribution
• Fuse box
• OBD2 port
• Accelerator pedal
• Ignition switch
• Ignition Coils
• Cam Position
• Crank Position
• VVT Solenoids
• E-Throttle Motor
• MAP-T – Manifold Pressure and Temp Sensor
• TIP – Throttle Inlet Pressure Sensor
• Fuel Line Pressure Sensor
• High Pressure Fuel Pump
• Engine Coolant Temp
• Cylinder head temp
• EBCS – Electronic Boost Control Solenoid
• Alternator Control
• DI Injector, Fuel Rail Pressure, and Knock Sensor Sub-Harness

Designed with cabin ECU mounting in mind, the harness routes your ECU inside the car rather than the engine bay, keeping it protected and accessible. Coverage includes power distribution, OBD2, ignition, fuel system, boost control, throttle, sensors, and more.

Need an ECU? Add a JEM-Sport pre-programmed, PATS-deleted unit at checkout and your harness ships ready to run. Prefer to use your own? Send it in and we’ll handle the programming separately.

Whether you’re building a race car, a track toy, or a dedicated swap project, this harness is the clean foundation your build deserves.

Compatibility: Any 1st Gen 2.3L EcoBoost — 2015–2023 Mustang EcoBoost, Explorer, Focus RS, MKC, Ford Performance crate engine Includes: Engine harness, chassis harness, fuse box — all new components ECU options: Send your own or add a JEM-Sport ready-to-run ECU at checkout

Download Installation Instructions

We offer several different wiring solutions:

1. The JEM-Sport “Chassis-Side” patch harness for people planning to keep the OEM Ford engine harness and ECU.
2. The JEM-Sport “Engine-Side” harness for people who simply need a quality replacement engine wiring harness.
3. The JEM-Sport “Complete Wiring Solution” for chassis and engine, available with or without an ECU/PCM ready to start your Ecoboost engine!  (The product you are currently viewing.)