Sderbyshire
Into Sailing, classic Triumph cars and motorbikes.
Hi electronic gurus ......
Ive fitted a simple digital tacho to my cb390 today
Three wires for ignition, earth and sensor.
Connected the sensor to points output, ie the blue or yellow wire to the coil.
I’m getting very high and unstable rev readings, which i’m guessing is due to noise ?
I have the tacho set to 0.5 pulses per rev, which should be right, bit even if it set it as high as 6 ( 12 cylinder!) tacho readings still high and unstable.
I did also try wrapping the pickup wire around an ht lead but go no readings this way.
Suggestions please to suppress the noise and get a steady signal to the tacho
Steve
Ive fitted a simple digital tacho to my cb390 today
Three wires for ignition, earth and sensor.
Connected the sensor to points output, ie the blue or yellow wire to the coil.
I’m getting very high and unstable rev readings, which i’m guessing is due to noise ?
I have the tacho set to 0.5 pulses per rev, which should be right, bit even if it set it as high as 6 ( 12 cylinder!) tacho readings still high and unstable.
I did also try wrapping the pickup wire around an ht lead but go no readings this way.
Suggestions please to suppress the noise and get a steady signal to the tacho
Steve