ECU wire identification

[CarRacer]

Hoping you guys can help me out in identifying these two wires.

First one is this green wire with the white plug that is in the knock sensor and O2 sensor wiring.

Second wire is on the MPI relay. It is a black wire with a red stripe, it is on the lower right of the plug in this picture. I'm pretty sure it's the 12v power input but I'm not 100% on that.

 

[jepherz]

I believe the first one is the o2 sensor debug port. Not sure on the second although I could test it out later if you need.