The old rf gave a speedo sensor connector and a smiths electronic speedo to work with and so far i have failed to get it working any helpwould be appreciated
the audi sensor creates 4 pulses per revolution picked up via the sensor which is either of the type magnetic or hal/ecu (what does hal mean?) On advice I used the hal terminal but I am uncertain if this is correct as Its probably magnets producing the pulse.
the smiths speedo has eight connections on the rear
1. ignition+ve
2. reset switch (not used)
3.pull up/down if required (what is this?)
4.illumination
5.chasis earth
6.speed pulse input hal/ecu
7.speed pulse input magnetic
8. not used
so far i have used 1,4.5.6, and speedo measures nothing even when coded corectly to 3129 pulses per mile.
I realise that other sensors have been used on the drive shaft but a few people have got theirs to work normally with out addition Noteably Jerry in uk but his memory is a little vague as to exactly the way it works and although I have coppied his instructions its failed
Any idea how to measure the pulsesfrom the sensor, volts etc and as I see it one side sensor is an earth connection the other is the out put to speedo
some electronic genius out there must be able to help
the audi sensor creates 4 pulses per revolution picked up via the sensor which is either of the type magnetic or hal/ecu (what does hal mean?) On advice I used the hal terminal but I am uncertain if this is correct as Its probably magnets producing the pulse.
the smiths speedo has eight connections on the rear
1. ignition+ve
2. reset switch (not used)
3.pull up/down if required (what is this?)
4.illumination
5.chasis earth
6.speed pulse input hal/ecu
7.speed pulse input magnetic
8. not used
so far i have used 1,4.5.6, and speedo measures nothing even when coded corectly to 3129 pulses per mile.
I realise that other sensors have been used on the drive shaft but a few people have got theirs to work normally with out addition Noteably Jerry in uk but his memory is a little vague as to exactly the way it works and although I have coppied his instructions its failed
Any idea how to measure the pulsesfrom the sensor, volts etc and as I see it one side sensor is an earth connection the other is the out put to speedo
some electronic genius out there must be able to help