Technical > Wiring & Sensors

rev counter input?

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gunni:
That really leaves you few options but to get an oscilloscope on the current tacho wire to make sure it´s actually working.

Tony C:
getting hold of an oscilloscope is the next problem,

the wiring has not changed from running the coil set up,
had a mallory cdi unit which had a tach output,
when this was removed the tach wire was moved from the cdi straight to the ec36 vems plug,
weird aint it,

Tony C:
i have a test meter with rpm on it,
if i connect this to the tach output wire from the vems would that give us an idea if its working?

gunni:
Only if you have the 12v and resistor on the circuit.

Can you measure continuity from the vems tacho output to the tacho?

Tony C:
i'll do that after work tomorrow,
cheers guys.

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