High-Output Ignition Harness for FD3S RX-7
The Elite 1500 Terminated Harness for Mazda 13B S6-8 is the ultimate wiring solution for high-horsepower FD RX-7 builds. This harness is specifically engineered to pair the S6-8 (FD) engine architecture with the industry-leading IGN-1A High Output Smart Coils. Rotaries require immense spark energy to ignite the mixture reliably under boost, and IGN-1A coils are the gold standard. This harness comes pre-terminated with the specific connectors for these coils, eliminating the need to build a custom ignition sub-harness.
Engineering Deep-Dive: High-Current Ignition Support
IGN-1A coils can draw significantly more current than stock coils. This Haltech harness is designed with appropriate wire gauges to supply the necessary current to the coils without voltage drop, ensuring maximum spark energy (up to 103mJ). The harness also connects directly to the S6-8 Crank Angle Sensor, ensuring precise timing input. It is terminated with Bosch EV1 injector connectors, allowing the use of a wide range of aftermarket injectors commonly used in rotary builds.
Operational Benefits: Plug-and-Play Power
This harness streamlines the installation of a high-end ignition system. Instead of cutting and splicing into a 25-year-old loom, you have a brand new, fused, and relayed harness that plugs directly into the coils, injectors, and CAS. This dramatically increases reliability and cleans up the engine bay. The Elite 1500 ECU (sold separately) provides the logic to drive these smart coils sequentially for the smoothest possible operation.
Fitment and Application Scope
Suits:
- Mazda RX-7 FD3S (Series 6, 7, 8 13B-REW).
- Engines using S6-8 CAS.
- Ignition: Terminated for IGN-1A Coils (Haltech HT-020114).
- Injectors: Bosch EV1 Connectors.
Technical Specifications
| Parameter | Specification |
|---|---|
| ECU Compatibility | Haltech Elite 1500 |
| Engine Platform | Mazda 13B S6-8 (FD) |
| Coil Termination | IGN-1A (Smart Coil) |
| Injector Termination | Bosch EV1 |
| Power | Integrated Fuse Block |
Summary & Includes
The HT-140882 is the choice for high-boost rotary builds. It provides the heavy-duty wiring needed for IGN-1A coils right out of the box.
Includes:
- 1 x Engine Harness with Fuse Block
- 1 x Pre-wired IGN-1A Ignition Harness
- 1 x Firewall Grommet
Critical Note: The IGN-1A coils themselves are NOT included and must be purchased separately (HT-020114 x 4).
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