V-Twin Electronic Ignition System - Harley DavidsonDual fire electronic ignition system features fully encapsulated construction. Includes special trigger rotor for use with traditional mechanical advance mechanism. Precise digitally set rpm limiter (200 rpm steps from 5200 to 7000 rpm). Status LED for easy static timing. Electronic dwell control for maximum ignition energy at high rpm and reduced current draw at low rpm. Compatible with most OE and aftermarket dual fire ignition coils. Hall effect