Haltech NEXUS S3 Plug-n-Play Adapter Harness

Haltech NEXUS S3 Plug-n-Play Adapter Harness Seamless integration — The Haltech NEXUS S3 Plug-n-Play Adapter Harness provides a fast, reliable way to connect your vehicle to the Haltech NEXUS S3 ECU without cutting or splicing factory wiring. Designed for precision fit and simple installation, this harness preserves OEM connectors and circuits for a clean, professional setup. Direct compatibility: Engineered specifically for the NEXUS S3 series to ensure correct pinouts and signal integrity. Time-saving installation: Plug-and-play design greatly reduces install time compared to custom wiring. Reliable construction: High-quality terminals, sealed connectors, and durable jacket materials resist vibration and environmental exposure. Serviceable: Maintains factory harness for easy diagnostics and future vehicle servicing. Perfect for tuners, installers, and enthusiasts who demand a professional, OEM-style install. This adapter harness is an essential accessory to unlock the full capabilities of your Haltech NEXUS S3 ECU while protecting the vehicle’s original wiring.