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SKU: HT-189002
Haltech NEXUS Universal Plug-in IO Expansion Harness - 2.5m (8ft)
The Haltech HT-189002 NEXUS Universal Plug-in IO Expansion Harness is the best solution for expanding input/output capabilities on Haltech NEXUS ECUs in any vehicle application. This 2.5m (8ft) harness provides additional wiring for sensors, actuators, switches, and other devices, enabling seamless integration of extra features like boost control, nitrous, flex fuel, data logging, or custom sensors without cutting factory wiring. Plug-and-play design with pre-terminated connectors ensures quick, reliable expansion for street, race, or custom builds.
Key Features
- Universal Plug-in Design: Compatible with all Haltech NEXUS series ECUs – direct plug-in to expansion port
- 2.5m (8ft) Length: Sufficient reach for most engine bay or chassis layouts
- Pre-Terminated Connectors: High-quality Deutsch or Molex connectors for secure, weatherproof connections
- Additional I/O Channels: Expands ECU inputs/outputs for sensors, solenoids, relays, and more
- Shielded Wiring: Reduces electrical noise for accurate sensor readings and stable operation
Specifications
| Specification | Detail |
|---|---|
| Part Number | HT-189002 |
| Length | 2.5 meters (8 feet) |
| Connector Type | Haltech NEXUS Expansion Plug + Multi-Pin Deutsch/Molex |
| Wire Gauge | Application-Specific (Sensor/High-Current) |
| Shielding | Yes (Noise Reduction) |
| Compatibility | All Haltech NEXUS Series ECUs |
| Country of Origin | Australia |
| Warranty | Limited Lifetime (Manufacturer) |
Product Notes
- Universal harness – pinout and wire colors match Haltech NEXUS expansion connector
- Perfect for adding boost solenoids, wideband O2, flex fuel sensors, nitrous control, or data logging
Installation Notes
- Estimated time: 1-3 hours, moderate difficulty, basic hand tools required
- Plug into NEXUS ECU expansion port – route harness to devices; professional tuning recommended for new I/O setup
This Part Fits
| Application | Notes |
|---|---|
| Haltech NEXUS Series ECUs | All Models (Universal Expansion) |
| Common Uses | Any Vehicle with Haltech NEXUS ECU – Street, Race, Custom Builds |
Why Choose Haltech IO Expansion Harness?
- Official Haltech accessory – perfect compatibility and reliability with NEXUS ECUs
- Shielded wiring and quality connectors reduce noise and ensure stable signals
- Limited lifetime warranty provides peace of mind for performance and racing applications
Frequently Asked Questions
-
Q: Does it fit all Haltech NEXUS ECUs?
A: Yes, universal plug-in design for all NEXUS series ECUs – direct expansion port connection. -
Q: What gauge are the wires?
A: Application-specific – sensor wires lower gauge, high-current outputs heavier for proper load handling. -
Q: Is tuning required?
A: Yes, new I/O channels must be configured in Haltech NSP software for proper function. -
Q: Can it be extended?
A: 2.5m length sufficient for most installs – custom extensions available if needed.
Shipping & Handling
- Method: UPS/FedEx Ground
- Availability: In stock, ships same or next business day
- Packaging: Official Haltech retail box
Haltech
Haltech is an Australian manufacturer of standalone engine management systems, producing the Elite series ECUs that are among the most capable and user-friendly aftermarket engine management platforms available to professional tuners and high-level enthusiasts worldwide. Haltech's Elite 550, 750, 1500, and 2500 ECUs provide full sequential fuel injection and ignition control, built-in wideband oxygen sensor input, and a broad I/O capability that supports complex engine builds including those with individual throttle bodies, direct injection, and complex ignition systems. The NSP series provides an even more advanced platform for race and professional motorsport applications with the highest channel count and fastest processing speed in the Haltech lineup. Haltech Plug-In ECUs for popular OEM applications allow a factory-level installation of a fully programmable ECU without any custom wiring, and the brand's Plugin Kits for popular Japanese sports cars are among the most widely used...
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