DAYTONA TWIN TEC LLC Plug-In Ignition Module Harley Davidson 1009

Feature 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, 12V 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.