Sounds like CDI got fried from something, some one makes a cheap knockoff CDI for Eiger/cat 400s.
Yes I tried that. Idk what it is. CDI box is still making a high pitch noise.Did you try switching the white and yellow wires on the plug-in from the stator harness that comes out of the stator? You sometimes have to do that with some after market flywheels you purchase to get spark. I've replaced my flywheel twice over the years. The first flywheel I just plugged in the stator harness and put it together and it worked. The second flywheel I had to reverse the white and yellow wires to get it to spark. The magnets in the flywheel are reversed in some after market flywheels. And switching those two wires corrects the problem.