What wire at the ECM do I need to tap into for my Air Fuel Ratio gauge?


Tried the search, but nothing.

if i remember right on my 88 Iroc it was the purple wire... if that doesnt help PM me and I will double check for you.

I had the same question also. I've heard it was the purple one too. So just tap into it under the dash, right?

yup

The purple wire going into the ECM? IS that what you mean? I know the wire coming out of the gauge is the purple one, but what about the ECM?

yes, the purple wire going in to the ECM is what you tap in to.