ZEX Nitrous Window Device

[Pat]

Zex had my order in my hot little hands in one day. I am now in the process of installing the device but have a question.

I can use either a COP tach signal or the signal from the ECM to the tach. I think it would be easier to use a COP tach signal but I don't know which wire on the COP connector to use.

Anybody have that info?

Thanks,

Pat