Introducing the MaxxECU harness and harness adapter kit, the ultimate solution for integrating a MaxxECU STREET, V1, RACE, or PRO into your car's OEM body harness. With this kit, you can connect your MaxxECU to the engine using the base harness and wire it to the car using the adapter harness, which integrates seamlessly with the OEM fuse and relay box.

Thanks to our plug-and-play design, you can easily connect your MaxxECU to the engine using the base harness and wire it to the car using the adapter harness, which integrates seamlessly with the OEM fuse and relay box. The harness adapter connects all the necessary wires, including coil power, ECU power, alternator, oil pressure light, tach, and starter signal, so you can focus on unleashing your car's full potential.

Our kit maintains the OEM battery cables, ensuring a smooth and reliable connection between your car's electrical system and the MaxxECU. And if you're looking for a clean and professional installation, we recommend our ECU cover plate, which comes with a grommet for easy installation.

The base harness includes support for long VAG ignition coils (not included), starter and alternator support, an extra connector for boost solenoid, VANOS support, and connectors for injectors, CLT, IAT, TPS, engine ground, idle solenoid, crank trigger, CAM, and LSU 4.2.

Whether you're a seasoned professional tuner or a DIY enthusiast, the MaxxECU harness and harness adapter kit is the ultimate choice for maximizing your car's performance. So why wait? Order yours today and experience the unrivaled power and precision of the MaxxECU!