IGN-1 Inductive Ignition Coil

The IGN-1 is a powerful, affordable ignition coil that shares the same core design as the renowned IGN1A but without the built-in ignitor, making it a flexible solution for both distributor and coil-per-plug systems. Ideal for use with external ignition modules like BIP373s, this coil is vibration-resistant, angle-mountable, and features a secondary ground connection for enhanced electrical isolation and performance stability.

It uses HEI-style spark plug wire boots and is one of the few performance coils in its class with a separate secondary ground—ensuring robust operation even in demanding motorsport environments.

Note: For capacitive discharge ignitions (e.g., MSD systems), use the IGN1-CD instead.

Key Features

• Same internals as IGN1A, without the integrated ignitor

• Suitable for both distributor and coil-per-plug setups

• Requires external ignition module (e.g., BIP373 or similar)

• Built for high vibration resistance and flexible mounting

• Uses HEI plug wire boots

• Secondary ground helps reduce noise and improve spark consistency

Connector Pinout

• A (outermost) – 12V Power (connect to battery)

• B (center) – Negative trigger (to ignition module)

• C (innermost) – Secondary ground (to cylinder head)

Electrical Specifications

• Primary Resistance: 0.5 Ω ±10%

• Primary Inductance: 4.8 mH ±15%

• Secondary Resistance: 8.5 kΩ ±20%

• Secondary Inductance: 22.5 H ±20%

• Output Voltage: 41 kV ±10%

• Output Energy: 118 mJ ±7%

• Peak Secondary Current: 100 mA ±7%

• Arc Duration: 3.2 ms ±10%

• Turns Ratio: 71:1

• Standard Dwell: 3.0 ms