Haltech Nexus Plug-in DBW Expansion Harness - 2.5m / 8ft (HT-189003)
The Foundation for a Modern, Electronic Throttle RB26 Build.
The Haltech DBW Expansion Harness (HT-189003) is the premium wiring solution for those looking to modernize their engine management strategy. This 2.5m (8ft) harness plugs directly into the auxiliary port of your Nexus Plug-in ECU, providing pre-wired connections for a Bosch DBW Throttle Body and an Accelerator Pedal Position (APP) sensor. By moving to Drive-By-Wire, you unlock advanced features like rev-matching and precise idle management.
- Primary Upgrade: Adds full Drive-By-Wire (DBW) electronic throttle support.
- Pre-Wired Inputs: Connections for Flex Fuel, Oil/Fuel Pressure, Wideband O2, and Air Temp.
- Specific Plugs: Includes a dedicated Bosch DBW throttle plug and a universal APP sensor connector.
- Part Number: HT-189003
⚠️ DBW SAFETY & CALIBRATION NOTE
APP Sensor Requirement: To utilize this harness for Drive-By-Wire, you must install an Accelerator Pedal Position (APP) sensor. Many Skyline owners utilize 350Z/370Z or BMW-style pedals. The provided universal plug must be pinned to match your specific pedal’s pinout.
Failsafe Integration: This harness also includes spare pins for the 26-pin connector, allowing you to add additional safety sensors such as coolant pressure or crankcase pressure to complement your DBW strategy.
Beyond Just Throttle Control
While the "DBW" name highlights the throttle capability, the HT-189003 is a full-featured expansion loom. It includes all the sensor connectivity of the standard IO harness, allowing you to implement Engine Protection failsafes for fuel pressure, oil pressure, lean protection simultaneously.
Commonly Purchased With:
• 150 PSI Pressure Sensor (HT-010904) - For Oil and Fuel pressure monitoring.
• Haltech Flex Fuel Sensor (HT-011000) - For real-time Ethanol content sensing.
• Nexus Skyline Wideband Bundle (HT-231802) - The recommended ECU bundle for this harness.
