Elite 1500 Mazda 13B S6-8 CAS with Flying Lead Ignition Terminated Harness Injector Connector: Bosch EV1

Flexible Ignition Wiring for FD RX-7s

The Elite 1500 Terminated Harness for Mazda 13B S6-8 (Flying Lead Ignition) is designed for FD RX-7 owners who want the reliability of a new engine loom but require the flexibility to choose their own ignition system. This harness connects the Haltech Elite 1500 to the S6-8 CAS and injectors (terminated with Bosch EV1 connectors), but leaves the ignition output wires as flying leads. This allows the installer to terminate the ignition wires to whatever coil system they prefer—whether it’s the factory coils, LS2 truck coils, or a CDI system.

Engineering Deep-Dive: Customization Ready

While the IGN-1A is the top tier, many builders already have LS coils or wish to retain the factory igniter system for mild builds. This harness accommodates that. The core engine functions (CAS, Injection, TPS, Temp Sensors) are fully terminated and shielded to motorsport standards. The ignition outputs are bundled and labelled, ready for crimping to your specific coil connectors. This “semi-terminated” approach saves time on the difficult sensor wiring while leaving the ignition architecture open to the builder’s preference.

Operational Benefits: New Wiring, Custom Spark

Replacing the heat-cycled, brittle factory FD harness is the best insurance against engine failure. This harness restores electrical integrity to the injectors and sensors. The EV1 injector connectors allow for easy upgrades to modern high-impedance injectors. The integrated fuse block simplifies the power supply wiring, ensuring the ECU has clean power.

Fitment and Application Scope

Suits:

• Mazda RX-7 FD3S (Series 6, 7, 8 13B-REW).
• Ignition: Custom (Flying Leads).
• Injectors: Bosch EV1 Connectors.

Technical Specifications

Summary & Includes

The HT-140879 offers the best of both worlds: plug-and-play sensors with custom ignition options.

Includes:

• 1 x Engine Harness with Fuse Block
• 1 x Flying Lead Ignition Harness
• 1 x Firewall Grommet

Note: You will need to source and crimp the connectors for your specific ignition coils.