Haltech Nexus S2 Plug 'n' Play Adapter Harness Kit - Subaru WRX MY99-00

The Haltech Nexus S2 Plug 'n' Play Adapter Harness Kit delivers direct integration for MY99-00 Subaru WRX GC8 models, enabling full Nexus S2 ECU fitment without splicing or modifying the factory wiring loom. Designed specifically for first-generation WRX platforms, this harness maintains OEM connectors while unlocking advanced engine management capabilities. Ideal for workshops requiring reliable, reversible ECU installations that preserve vehicle integrity. The plug-and-play design reduces installation time and eliminates wiring errors, ensuring consistent results across multiple builds.