A Haltech plug 'n' play adapter harness that connects a Haltech Nexus S2/S3 ECU to the factory Mazda wiring for a fast, no-cut install, with full programmability of fuel and ignition timing.
Fitment: Mazda RX7 FD3S Series 7 & 8 (1996-2002), 13B rotary, 4-row ECU plug, manual transmission only. Suits Haltech Nexus S2 and S3 ECUs.
In the kit:
- Injection-moulded plug 'n' play adapter harness
- M14 x 1.5 air-temp sensor with plug and pins
- Auxiliary I/O 16-pin Tyco plug and pins
Key features:
- Plug 'n' play — up and running in a few hours
- Plugs straight into the factory harness, no cutting
- Fully programmable for performance tuning
Please note: Adapter harness only — Haltech Nexus S2 or S3 ECU sold separately. Manual transmission only. For a complete ECU kit see HT-212306 (S2) or HT-213306 (S3).
Genuine Haltech. Part #HT-186339.


























