Reply To: ETZ251 Electronic Revcounter / Tacho

Forums Technical Two Stroke: Help needed ETZ251 Electronic Revcounter / Tacho Reply To: ETZ251 Electronic Revcounter / Tacho

#10750
Keith Angus
Participant

I’m not clear whether you are running a Saxon, but on those the green wire comes from one output of the alternator, so this feed AC to the tacho. Since the frequency depends on the engine speed, that’s all you need.

I know when I first looked at the Saxon wiring, long ago when i got my first one, I found the tacho arrangements confusing, but they are actually quite simple – at least in wiring terms.