Elite 2500 + Terminated Harness Kit for Nissan RB Engines (no ignition sub-harness, no CAS sub-harness)

The Flexible Backbone for Custom RB Builds

In the realm of high-performance Nissan RB engine builds, the factory wiring harness is a well-documented point of failure. The Elite 2500 + Terminated Harness Kit is engineered as the definitive solution, providing a professional-grade, custom-terminated main engine harness that serves as the critical nervous system for your powertrain. This kit is designed explicitly for the RB series (RB20, RB25, RB26, RB30), but with a strategic difference: it excludes the ignition and CAS sub-harnesses. This exclusion grants the seasoned builder maximum flexibility to integrate custom ignition systems (like massive IGN-1A coils) and aftermarket crank trigger kits (like a PRP trigger kit) without paying for or discarding unused factory-style sub-looms.

Overview & Core Design Purpose

The Elite 2500 kit is purpose-built to replace the aging, brittle, and notoriously complex factory main engine loom. Its core design philosophy centers on providing a pristine, noise-free signal path from every critical engine sensor and actuator to the ECU. By supplying the main harness pre-terminated with high-quality connectors for the engine-side sensors and actuators (TPS, IAT, CLT, injectors, etc.), it eliminates the most time-consuming portion of a custom wiring job. This kit provides the essential backbone, empowering you to complete the final connection to your chosen ECU and ignition system with clean, short, and custom-tailored runs.

Primary Benefits & Build Advantages

• Custom Ignition Ready: Perfect for builds using non-stock coils (e.g., R35, LS, IGN-1A) where a standard coil harness would be cut up anyway.
• Trigger Kit Compatible: Ideal for engines running aftermarket crank/cam trigger kits that use different connectors than the stock CAS.
• Uncompromised Signal Integrity: High-grade, cross-linked polyethylene (XLPE) insulated wire ensures sensor signals remain accurate and free from EMI.
• Professional-Grade Terminations: Every pin is crimped with industrial-grade tools to MIL-SPEC standards, utilizing premium gold-plated terminals where applicable.
• Enhanced Serviceability: The logical, organized routing with clear labeling at every junction point allows for rapid circuit tracing and component testing.

Component Breakdown & Construction Details

The superiority of the Elite 2500 harness is defined by its material selection. The conductor of choice is TXL cross-linked polyethylene insulated wire, recognized in motorsport for its thin wall construction, high-temperature rating (125°C continuous), and exceptional resistance to fluids. Connector selection is critical; the kit employs a mix of OEM-spec connectors for original equipment sensors and sealed Deutsch DT/DTM series connectors for aftermarket ECU and auxiliary device interfaces.

Vehicle Fitment & Application Notes

Primary Application: Nissan RB Series Engines (RB20, RB25, RB26, RB30) in any chassis (Skyline, S-Chassis, Datsun, etc.).

Critical Exclusions: This kit DOES NOT include an ignition coil harness or a CAS harness. It is intended for users who will be building their own custom sub-harnesses for these specific systems.

Technical Specifications