My girlfriend mom got a 1999 Ford Taurus we put engine on it but her uncle the was doing it never finish it is almost done and I kind of now about cars but there some cables the isn't hook up yet they go to a sensors I found where some of theme goes.. but I can't fine where this one the got's one whole entrance goes at is behind the motor kind of where intake goes at...

I got a oldmobile achiva I want to do the oil change but problem is the bolt does not got no grip can any one *** give me opions