205 gearbox speedsensor

Toyota1968

New member
I can see that the st205 speed sensor is a three pin item with instrument earth , ign 12v and signal on the pins ...... Signal pin appears to be the middle pin...... Can anyone tell me which is 12v and which is earth..... Putting sensor in a rally car and want to use Speedo sensor to drive tripmeter
 

Overtriped

New member
I am also wondering about this sensor, i plan to use it with my new ECU to get a speed reading to enhance the capability of launch control ect. clocking mileage and speed would be a plus,'
 
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