RE: New CDI - opensource project JMJ and Bigboat
A fast check will be the LED output.
Between the 2 pins (there are 3, 2 minus and 1 power) a LED with a 150 Ohm resistor and you can see if you have a sparkoutput.
Remove the jumpers and the LED must be flash 300x a minute.
If the LED flash, you can try it with a magnet, don't forget to place the jumpers backon.