Haltech Nexus S3 Plug 'n' Play Adapter Harness Kit - Mazda MX5 NA

The Haltech Nexus S3 Plug 'n' Play Adapter Harness Kit delivers seamless integration between your Mazda MX5 NA and the Nexus S3 ECU platform. Designed to eliminate wiring modifications, this complete adapter harness maintains factory plugs while unlocking full standalone engine management capabilities. Ideal for workshop environments where turnaround time and reliability matter, the kit preserves the original loom integrity while enabling precise fuel, ignition and sensor control. Engineered specifically for NA-chassis MX5 models, it supports professional tuning without compromise to factory-level build quality.