AEM Wideband help!
 

So I'm trying to get the last touches done before I take my miata to my tuner, he requested I wire up the blue(logging wire) to a serial port to USB for logging. Which I have but now my question am I suppose to use the white cable from the wideband as a signal to my ems4? Or what am I connecting that wire to? Or am I simply forgetting about it? I've honestly been told to do every option I just listed. Tap it to the o2 sensor pin on ems, simply forget out it, ive also been told to give it it's own setting with the gpio pins, but I'm sure that's not the right way. Any suggestions? Thanks

Also if this helps, my o2 reading on aem tuner is going crazy? Really jumpy everywhere again because maybe theirs not o2 signal or wideband in my case.