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