DynatekDynatek, single fire tach adapter for Dyna-S 907410 fits 70-99 Big Twin with Dyna-S single fire module (NU) Used to correct electronic tachometer output when using a Dyna-S single fire ignition module. Note: This adapter cannot be used with Spyke, S, Crane or Compu-Fire ignition modules. Δείτε περισσότερα στον κατάλογο V-Twin Home > Parts > Electrical > Ignition > Electronic Ignition > Other > Dynatek, single fire tach adapter for Dyna-S