Nexus S2/S3 Plug ‘n’ Play Adapter Harness Nissan Silvia S14 S1 ZENKI

Nexus Integration for the Zenki: Adaptor Harness for S14 Series 1

The Nexus S2/S3 Plug ‘n’ Play Adapter Harness is the critical link for installing Haltech’s Nexus series VCUs into the Nissan Silvia S14 Series 1 “Zenki”. Designed for the specific blue ECU header of the early S14, this harness allows the advanced Nexus S2 or S3 to control the SR20DET engine with modern precision. It eliminates the need for custom wiring, providing a direct interface between the factory loom and the VCU.

Engineering for the Nexus Platform

This harness maps the Zenki’s unique pinout to the Nexus inputs/outputs. It supports the factory optical CAS and VCT solenoid, ensuring the engine runs as intended but with vastly superior control. The harness includes an auxiliary I/O connector for adding aftermarket sensors like wideband O2 and fuel pressure, which the Nexus VCU can log and use for engine protection. The kit includes an air temp sensor for Speed Density conversion.

Operational Benefits

By upgrading to a Nexus VCU with this harness, S14 owners gain access to features like Wi-Fi connectivity, high-speed data logging, and advanced motorsport functions (launch control, anti-lag). The installation is clean and reversible, preserving the factory wiring. Whether using the S2 or S3, the result is a thoroughly modernized engine management system that unlocks the true potential of the SR20DET.

Fitment Guide

• Nissan Silvia S14: Series 1 “Zenki” (1993-1996)
• Transmission: Manual Only

Technical Specifications

Summary & Includes

Includes:

• 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. Fits S14 Zenki ONLY.