CDI tester project

Initial response is there is nothing on pin 7. Does this require a feedback on pin 3 to start?

No charge pulses are independent of any signal on pin 3.

The default is for no charge pulse unless pin 6 (setChargePulsePin) is grounded. Do you have a 2 position switch on pin 6? If not, you can just run a wire from 6 to ground.