[Shotimes] Speedometer question

[Kevin & Cheryl Airth]

Carl:
 The VSS puts out a AC sine wave which is proportional to vehicle speed. I
don't have the complete specs but to test it you put the car in gear with a
wheel off the ground and you should get .5 VAC or more. The voltage
increases with vehicle speed. Your tire diameter would affect the output so
it's not a set number and all aftermarket electronic speedometers I have
seen have a adjustment or tuning knob to calibrate it to your situation.
This is VERY common in the street/hot Rod world.
.
.

> Has anyone adapted an aftermarket speedometer to pickup off the existing
> Speedometer sensor in the transmission? Just curious if anyone knows off
the
> top of their head what the number of pulses per mile would be from the
speed
> sensor in the transmission?
>
>
>
> Thanks!
>
>
> Carl