Thunder Heart Performance Twin Cam Stand-Alone Ignition System EA5012 Designed for use in custom applications where a Twin Cam motor and crank sensor are used Complete ignition system includes module, coil, wires, Smart Link software, communication cable and instructions (no Harley factory harness required) Consolidates ignition components into a small, easy-to-mount package Integrated high-output single-fire operation Fully programmable spark timing and rev-limit setting