Hi Mike,
Here are the images from testing an AXP Golf HO2S pump current flow. After giving it some thought I am sure that these were taken from the red and yellow wires. I think it would have to be 2 wires because of the reverse of polarity. I did not save the whole movie but as you can see it's not a lot different from the output signal of a normal zirconia sensor. I know it's not ideal but in the absence of a suitable amps clamp it has worked for me as can be seen by the after and before images from the same vehicle.

After Replacement.


Before Replacement


Regards to all.
Bryan.