Mag Buzzer

THE QUICKEST WAY to time your Engine. Hook it up to your Mag, rotate the Engine to the desired Timing Mark, hold the Mag Rotor against rotation to take all the play out of the Cam and Mag Gear then rotate the base of the Mag till the Buzzer stops & the light on the box flickers. Tighten up the Mag and you're done! We always set ours with the Buzzer first then check it with a Timing Light at the track. It’s always dead on! Comes With The Battery Installed Ready To Use! Sorry Does Not Work With MSD Ignitions!!