Caine125cc

Have already disconnected brown wire at the ignition control unit to isolate the kill switch ect.

Scratching my head trying to get the bike running but no spark from the coil, have checked all the wiring all seems good, currently getting around 5v to the coil from the cdi but i dont know if thats enough. Resistance readings at the coil and the source and pulser coils are lower than haynes manual says they should be. I dont want to just throw a cdi at it and hope although Ive got one on the way just incase.