Nexus Connectivity for the GDB Platform
The Nexus S3 Plug ‘n’ Play Adapter Harness allows for the installation of the Haltech Nexus S3 VCU into the Subaru GDB WRX (MY01-05). This harness-only solution is perfect for racers upgrading to the Nexus system who need a reliable interface with the factory Subaru wiring.
Modernizing the Classic
This harness connects the Nexus S3 directly to the factory ECU plugs of the cable-throttle GDB chassis. It enables the Nexus S3 to manage all engine functions, including ignition, injection, and idle control. Additionally, users can leverage the Nexus S3’s onboard PDM to rewire high-current devices like fuel pumps and fans, simplifying the vehicle’s electrical system for competition use.
Fitment Guide
Vehicles: Subaru WRX GDB (MY01-05), STI (JDM/ADM MY01-05)
Throttle: Non-Drive-By-Wire (Cable Throttle) Only
Requires: Haltech Nexus S3 VCU (Sold Separately)
Technical Specifications
| Compatible VCU | Nexus S3 |
| Vehicle Interface | GDB Factory Header Plug |
Summary & What’s Included
The link to Nexus power for the GDB.
Includes:
- Plug ‘n’ Play Adaptor Harness
- Air Temp Sensor
- Auxiliary I/O Plugs
- Note: ECU/VCU NOT Included
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