Nexus S3 Plug n Play Adapter Harness - Toyota Supra JZA80

The Haltech Nexus S3 Plug n Play Adapter Harness delivers factory-grade integration for Toyota Supra JZA80 chassis fitted with Nexus S3 ECU systems. Engineered to connect directly between the OEM wiring loom and Haltech Nexus S3, this adapter eliminates cutting or splicing the original harness. Retains all factory connectors and sensor provisions while enabling full Nexus S3 engine management functionality. Built to Haltech's exacting standards with motorsport-grade terminals and protective sleeving, ensuring reliable performance in demanding tuning applications. Suits professional workshop installations requiring clean, reversible ECU upgrades.