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well more reading shows 60-100v+
it has CDI ignition. The CDI box outputs a pulse to the ignition coil.
That same pulse goes to the frequency to voltage converter on the tach.i remember reading that this pulse is around 20kv and the ignition coil boosts it up to 200kv. more reading last night about cdi said the pulse is only 60-100v
The thing is that I know what wire the stock tach uses, but i have no idea how much power is going through it and dont want to burn my chip
GND o--[10k]--+--[10M]--[10M]--[10M]--[10M]--[10M]--[10M]--[10M]--[10M]--[10M]--[10M]--o HT | DMM +V
Ive looked at voltage dividers online and the calculators are confusing. they dont say what data to input. BTW it runs on a 12v system. are my calculations correct? (pic)
why dont i just get a replacement tach for $20? i want a led one