Thunder Heart Performance Stand Alone Ignition For Harley Features: Want to run a Twin Cam motor in your custom bike With Thunder Heart Performance's new Twin Cam Stand-Alone Ignition, you can...easily Complete ignition system includes module, coil, wires, Smart Link software, communication cable and instructions This ignition is designed for use in custom bike applications where a Twin Cam motor and crank position sensor are going to be used It consolidates all ignition components into a small, easy-to-mount package Wiring the ignition system is a snap, because the builder doesn't need a factory Harley wiring harness The included Smart Link software allows the user to fully program the front and rear spark timing and rev limit with a laptop computer