Internal Ignition System - Harley Davidson

Feature two advance curve families that are adjustable to accommodate stock and modified engines. Selectable multi-spark mode for quick starting and smooth cruising. Four rotary switches for timing adjustments, single/dual ignition mode and rpm limit (100-rpm steps). Coil outputs protected against short circuits. Require coils with a minimum of 3 ohms resistance and low resistance spiral-core-type plug wires. Use the tachometer wire for the PC link and comes with a connector. Made in the U.S.A..