Nexus S2 Plug ‘n’ Play Adapter Harness Kit – Nissan Silvia S15

Nexus S2 Integration Kit: S15 & S14A Solution

The Nexus S2 Plug ‘n’ Play Adapter Harness Kit is the complete entry point for integrating the Haltech Nexus S2 VCU into the Nissan Silvia S15 and S14A “Kouki”. This kit bundles the powerful Nexus S2 unit with the specific adaptor harness required for the SR20DET application. It offers a compact, cost-effective solution for modernizing the engine management of these iconic chassis without the complexity of a full rewire.

Engineering for the Nexus S2

The Nexus S2 is a feature-rich VCU designed for 4-cylinder engines. This kit ensures it interfaces perfectly with the S15’s wiring. The adaptor harness routes the factory cam, crank, and vehicle speed signals to the S2, while providing outputs for the factory tachometer, fuel pump relay, and A/C clutch. The kit includes an air temp sensor for Speed Density tuning, allowing the removal of the restrictive MAF sensor. The S2’s onboard wideband controller (requires sensor) and data logging capabilities are fully accessible via this installation.

Operational Benefits

This kit simplifies the tuning process, providing a robust platform for everything from mild street builds to track-focused cars. The Nexus S2 offers advanced features like launch control, boost control, and flex-fuel support. The plug ‘n’ play nature of the kit means installation is quick and reversible, preserving the vehicle’s factory wiring integrity.

Fitment Guide

• Nissan 200SX / Silvia: S15 (Aust and JDM)
• Nissan 200SX / Silvia: S14A S2 “Kouki”
• Nissan 180SX: S13 Rev 3 “Type X” (1996+)
• Transmission: Manual Only

Technical Specifications

Summary & Includes

Includes:

• 1 x Haltech Nexus S2 VCU
• 1 x Injection Molded Plug ‘n’ Play Adaptor Harness
• 1 x M14 x 1.5 Air Temp Sensor with matching plug and pins
• 1 x Auxiliary I/O 16 Pin Tyco plug and pins

Note: Manual transmission only. Using S2 reduces some factory functionality compared to S3; consult guide.