well my head is almost completely off. head bolts all off, turbo is off, intake mani etc etc. Now my wiring harness is being annoying. i unclipped almost everything... except for this one that leads under my car. i jacked up the car, and followed it. well i pulled on it when i hit its end, and it looks like it goes straight up to above the tranny. What is this wire and how do i unhook it? i am simply dumb founded, probably from all the work.