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Anyone know 100% or can test to see what if the negitive lead on the coil goes from + then ground when sparking then back to +?

I have replaced the pick up coil and procom (twice on the procom) and the cdi doesn't seem to be giving the coil the signal to fire still.

i tried 2 different pro com's and both didn't work for me. bike wouldn't even start. sent mine out to triumph twin power and it works great.