i want to know if an 84 mazdas speedometer is driven by a cable or if a voltage signal is sent to the unit itself. what my main goal to do here is to capture that signal send it to a computer along with rpms, gas gauge, oil pressure, and voltage. i want to make a computer program to messure gas milage and other great things!! but i need to know how i can electronically capture the signals.

thanks if anyone knows anything about this

Chris

 

Its cable driven.

 

well then..... do you know of any conversion kits???

 

There are those things. speedocable->electronic pulse. I don't know where you can get those in the US, but it should be available. Maybe summitracing?

 

summit should have kits.


my friend has one on his 72 f250 hot rod....


ill ask him next time i see him.... im pretty sure he got it from summit or jegs

 

good, now to get the rest of the varibles to make my program complete!!!