Hand held tester generates a trigger signal to check the operation of MSD single channel Ignitions and the coil (6, 7, 8 and 10 Series Ignition Controls)

Triggers through breaker points, amplifier and magnetic pickup trigger inputs from the MSD Ignition

LCD display shows the simulated RPM and can be used to confirm the operation of rev limits, rpm activated switches, shift lights and tachometers Can be used on 4, 6 and 8-cylinder engines Additional circuit will check the operation of cam sync signals