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RPM signal available on OBD?

bnewport
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bnewport Member

bnewport

Posted
Posted

I bought a G2Extreme logger and it has a tach input. It wants a square wave 5V signal for RPMs. I understand this may be available from OBD, is there a pin on OBD with this or where can I get the RPM signal on the car.

Thanks

rustyone Member

rustyone

Posted
Posted

Yes, drop the OBD connector down and you will see a green/violet wire (top row of wires to the far left as I recall). You can use a crimp on connector and not disturb anything. I installed the sam unit in a Box S and am planning on installing it in the 4s I am getting.

  • 4 years later...
Todera Member

Todera

Posted
Posted

Yes, drop the OBD connector down and you will see a green/violet wire (top row of wires to the far left as I recall). You can use a crimp on connector and not disturb anything. I installed the sam unit in a Box S and am planning on installing it in the 4s I am getting.

Any updates on this? I am planning on installing a G2X as well this weekend. Any suggestions on where to tap into 12V switched power?

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