Haltech Flying Lead Harness
Fits Most Models with Nexus R3 VCU
HT-183200
Overview:
The Haltech Flying Lead Harness is designed to seamlessly integrate with the Nexus R3 Vehicle Control Unit (VCU), combining multiple advanced engine management functions into one streamlined wiring solution. This universal wire-in harness is ideal for dedicated race cars, engine swaps, and custom wiring projects where flexibility and reliability are paramount.
With clearly color-coded and labeled wires, this harness simplifies complex wiring tasks, allowing you to connect your Haltech VCU quickly and accurately. Whether you’re a professional tuner or an enthusiast building a custom setup, this harness helps you get your engine management system up and running efficiently.
Key Features:
The Haltech Flying Lead Harness offers a comprehensive set of features designed to support the full capabilities of the Nexus R3 VCU:
- 4 x 25A continuous push-pull PWM outputs operating at 5 kHz for powering injectors, coils, transbrake, thermofan, and fuel pump
- 8 x peak/hold injector drivers that can also function as low side drive outputs
- 8 x low current ignition outputs, also usable as low side drive outputs
- 6 x low side drive outputs with PWM capability (DPOs)
- 6 x push-pull / H-bridge outputs rated at 8A with PWM capability, suitable for electronic throttle control
- 11 x 0-5V analog inputs with redundancy for electronic throttle and switchable 5V pullup
- Trigger and home inputs featuring differential inputs, adjustable thresholds, and glitch filters
- 6 x synchronous pulsed inputs configurable as zero crossing or adjustable thresholds for cam sensors, frequency inputs, or analog inputs
- On-board wideband controller supporting NTK and LSU4.9 sensors
- Integrated 4 bar MAP sensor for precise manifold pressure measurement
- Dual CAN ports with switchable termination for flexible communication options
Construction & Design:
This universal harness features a set of VCU connectors on one end and unterminated, color-coded wires on the other, allowing for custom connections tailored to your specific engine and vehicle setup. The clear labeling corresponds directly with the detailed wiring diagram provided, ensuring a confusion-free installation process.
The harness is engineered for durability and ease of use in demanding motorsport and custom applications, providing reliable electrical connections that support the advanced functions of the Nexus R3 VCU.
Installation & Fitment:
The Haltech Flying Lead Harness is designed to fit most vehicle models compatible with the Nexus R3 VCU, making it an excellent choice for engine swaps and custom wiring projects. The harness requires you to connect the unterminated wires according to your engine’s wiring diagram, which is included with the VCU manual and software.
No cutting, drilling, or special tuning is required beyond following the wiring instructions. Simply connect the harness to your Haltech VCU, wire the engine components as directed, load your base map, and your system is ready to operate.
What's Included:
- Universal wire-in harness with VCU connectors and color-coded, labeled wires
- Detailed wiring diagram for accurate installation
- Access to full VCU manual and software via USB key or Haltech website download
Ideal For:
- Dedicated race cars requiring advanced engine management integration
- Engine swap projects needing flexible and reliable wiring solutions
- Custom wiring jobs where clarity and ease of installation are critical
- Performance enthusiasts and professional tuners using the Haltech Nexus R3 VCU
