Elite 2000/2500 Terminated Harness for Nissan RB Twin Cam With CAS Harness

Plug-and-Play Performance for Nissan RB Engines

The Elite 2000/2500 Terminated Harness for Nissan RB is the fastest, most reliable way to modernize the engine management of your Skyline, Laurel, or Cefiro. Designed specifically for the RB20, RB25, and RB26 Twin Cam engines, this harness completely replaces the aging, brittle factory loom with a motorsport-grade solution. It plugs directly into the Haltech Elite 2000 or 2500 ECU and provides terminated connectors for all standard engine sensors. Crucially, it includes a dedicated, shielded harness for the Nissan Crank Angle Sensor (CAS), addressing one of the most notorious weak points in the RB electrical system.

Engineering Deep-Dive: Solving the CAS Signal Issue

The Nissan RB engine relies on a optical CAS for triggering. The factory wiring is prone to interference (noise) which causes timing scatter and misfires at high RPM. This Haltech harness features a separate, fully shielded CAS sub-harness that routes trigger signals cleanly to the ECU, isolating them from the electromagnetic noise of the coils and alternator. The main harness is constructed with high-temp automotive wire and uses OEM-style connectors for injectors, coolant temp, and throttle position, ensuring a factory-like fit with aftermarket performance.

Operational Benefits: Time Savings and Reliability

Building a custom harness takes dozens of hours. This terminated harness installs in a fraction of the time. It is pre-wired for sequential injection and direct fire ignition (though it requires a separate ignition sub-harness or custom coil wiring, as the ignition breakout is generic). It also includes an integrated fuse and relay box, removing the load from the vehicle’s aging body wiring and ensuring the ECU, fuel pump, and injectors receive clean, stable power.

Fitment and Application Scope

Suits:

• Nissan RB20DET (Twin Cam)
• Nissan RB25DET (Twin Cam)
• Nissan RB26DETT (Twin Cam)
• Chassis: R32, R33, R34 Skyline, C33 Laurel, A31 Cefiro.

Technical Specifications

Summary & Includes

The HT-141226 removes the wiring headache from your RB build. It provides a solid foundation for high-horsepower tuning.

Includes:

• 1 x Nissan RB Twin Cam Terminated Harness
• 1 x CAS Harness
• 1 x Connector Pack for auxiliary I/O
• Integrated Fuse Box and Relays

Important Note: This harness does NOT have specific ignition coil connectors. It has a breakout for ignition. You must wire your specific coils (Stock, R35, LS) to this breakout.