ACCEL 35496 - SINGLE/DUAL FIRE IGNITION MODULESINGLE/DUAL FIRE IGNITION MODULEIgnition Module; Single/Dual Fire; Replacement For OE Electronic Ignition System On 1978-99 Harley-Davidson Evolution Motorcycle Engines;These ACCEL Motorcycle ignition modules work with both single or dual fire coils eliminating the need to buy a new ignition when you change coils. They have 14 preset ignition curves to cover a stock engine through exhaust and intake changes to a full blown big inch high compression motor. Other features include an easily selectable rev limiter and LED timing light for quick static timing. The harness has V.O.E.S. (Vacuum Operated Electric Switch) input, tachometer output, and is externally grounded for better reliability. The housing is machined out of aluminum for better heat dissipation. Many hours of dyno testing went into creating this ignition so that it is simple to use and delivers the premium performance you expect from ACCEL. 14 Preset Ignition Curves Reverse Limiter L.E.D. Timing Light For Quick Static Timing V.O.E.S. Input Tachometer Output Externally Grounded Aluminum Brand: ACCEL Category: Motorcycle Electrical Emission Code: 3 part type: Ignition Control Module Product Type: Motorcycle Ignition Systems and Components Sub Category: Control Modules Warning: California Proposition 65 Weight: 1.5000