Plug-In Ignition Module – Harley Davidson

Features two advance curve families that are adjustable to accommodate stock and modified engines; Selectable multi-spark mode for quick starting and smooth cruising; Five rotary switches for mode select, timing adjustments, advance slope and rpm limit (in 100 rpm steps); Coil outputs protected against short circuits; Require OEM coils with less than 1 ohm primary resistance and low-resistance spiral-core or carbon-core suppression-type plug wires; 12 V power adapters are used to power up the modules when removed from the bike (sold separately); Easy-to-follow instructions included; Will not work on fuel-injected models.; Made in the U.S.A.