MSD tach adapter will correct the operation of most voltage triggered tachometers or fuel injection systems that do not work directly off the tach output terminal of the MSD ignition unit.Made in USA Important: For use on non-current limiting ignitions originally equipped with a ballast resistor.Note: FOR USE WITH MSD IGNITION SYSTEMS ONLY. Application Notes: If you are triggering an MSD Blaster 5 6 SCI or 7 series ignition with its white wire or points terminal you will need item # 8910 or 8910E. For applications using green and violet wires for magnetic pickup input use item # 8920.
