I'm trying to hook up a PLX wideband to my Gen II . The gray wire from the PLX controller goes to pin 1 on the 10 pin harness (wideband/O2 input). What do I use for pin 2 (wideband/O2 ground) ? There is only the one wire (gray) on the PLX unit. Also, what wideband do I select from the list. I don't recall seeing the PLX listed.