ok tomorrow I have to find out .
Warp your picture of the stepper motor plug looks very similar to mine so I will go to the manual and check. I could not tell you what harness the plug come out of , just that it is from a large loom wrapped in tape above the cyl head. I do not have an oxy sensor in the exhaust anymore so it is not that . BTW WHERE IS THIS stepper motor what does it do and how can you see from my picture that it is not plugged in. I am looking at that picture and see nothing am I blind !!