I would like to know which wire do I have to splice from the 02 sensor. I would like to connect directly to 02 sensor rather than the ECU. The 02 sensor has 4 wires 2 blacks a green and white wire. Any help would be appreciated.

 

There are four wires. Two blacks are the heater circuit. Signal wire is the one you want, I don't remember if it's white or green, but check for continuity to the chassis ground on each one to pick out the ground.

 

Are you trying to read from the stock narrowband? It's kind of pointless unless you have a wideband o2.

 

Found it was the white wire. Thanks for everyone cooperation.

 

These things are a gimmick.