Part 1 complete... I removed all four 02 sensors yesterday and added wiring taps on the sensor side. The grey wire is the sensor ground and the black wire is the 02 sensor signal to the ECU/PCM.

I then wired a 12v power supply for the GIZMO for testing purposes and used a voltage meter to mark the approximate rotational point of each pot from 0 to 1 volt.

I am now ready to reinstall the 02 sensors and measure the voltage of each 02 sensor after the engine warms-up and achieves closed loop operation... Prior to attaching the GIZMO...

STAY TUNED !