Little help with INJ signal, on a motorcycle

[DanielMaia]

Hi there,

Im considering the MPGuino, but first i need to know if i can get the right INJ singal

The bike is a Honda CBF125, with PGM-FI fuel injected by Keyhin.

The thing is: im almost sure that is a wire pink/green the INJ signal, but i dont know how i should measure it. Voltimeter? + to wire, and - to ground (engine earth)?

What values should i expect when accelerating?

thank you a lot