Put the Westfield with its wheels in the air to test the speedo. Nothing 
.
Don’t know exactly why it isn’t working, my oscilloscope gets a reading so it should indicate something.
At 50 km/h (13.889 m/s) I have 41.5 Hz, iow 41.5 pulses for 13.889 m or 4800 pulses per mile. This is weird as it’s supposed to be 4000 ppm. Either way, it should read something, even at 4800 ppm.
The speedo expects 156000 ppm (32.5 times faster). I drove the car up to 170 kph, so the speedo should at least indicate 5 kph, but I get nothing.
Difficult to diagnose if it’s the speedo or a problem with my signal. Will do some more testing. Worst case, I make a VR conditioner to directly condition the signal of the transmission to 0-5V and feed that into the speedo.
