Daytona Twin TEC LLC External Plug-In Ignition Module - '90-'98 FL/FX/XL519585469 Product Description Unit has four rotary switches for timing adjustments, single dual ignition mode and rpm limit (100 rpm steps) Selectable multi spark mode for quick starting and smooth cruising Selectable single or dual fire mode 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 come with a connector