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1JZ/2JZ MT Harness for Haltech Nexus S3
1JZ/2JZ MT Harness for Haltech Nexus S3
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1JZ/2JZ MT Engine Harness for Haltech Nexus S3!
Compatible in most front mount engine rear wheel drive vehicles, this 1JZ/2JZ Nexus S3 engine harness meets the needs of most. Harness is designed to go in to cabin on intake side of engine.
Built with Mil-Spec ETFE Insulated Electric Wire (Tefzel wire) we strive to offer top quality harnesses.
Inputs:
- TPS
- Engine Coolant Temp. (ECT)
- Oil Pressure
- Fuel Pressure
- Flex Fuel
- AIT
- RW Speed
- A/C Switch
Outputs besides injectors and coils:
- Boost Solenoid
- A/C Compressor
- Radiator Fan
- Fuel Pump #1
- Fuel Pump #2
- RPM
- Speed
- Check Engine Light
Included with wiring harness is a fuse and relay panel with 5 fuses and relays as follows:
- ECU
- Injectors
- Coils
- A/C
- Starter
Harness is set up to having to connect 12v switch, starter signal, A/C switch signal, battery ground, and outputs to stock relays for radiator fans and fuel pump (for ECU control). You also have leads to splice your RPM, speed and check engine light.
That is all it takes to get you ready for tuning.
Option available to add DBW wiring at no extra cost.
Please select injectors and coils used on set up to have correct connectors on harness.
Haltech Nexus S3 NOT INCLUDED.
Shipping & Returns
Shipping & Returns
Plug and play
Plug and play
Warranty
Warranty

PREMIUM WIRING HARNESSES
Built for reliability, clean installation, and OEM-level fitment. Our premium wiring harnesses are engineered to simplify your setup while delivering dependable performance for street, track, and custom builds. Designed with high-quality materials, precision connectors, and attention to detail — so you can focus on driving, not troubleshooting.