Ok, while back, thought my MAF was bad, causing some problems. I find out that i'm somehow popping the underhood fuse labeled "ENG SENSOR". It feeds power to the MAF, o2's and i'm sure some other things I haven't found yet. My question is, the fuse doesn't pop the moment I start the car. Like today. I had to go do some things and drove ~35 miles before my Service Engine Soon light came one, I pulled over and yup, blown fuse. Now since it doesn't pop when i turn the car on, I can assume (sorta) that there is no +12 contacting a ground because say if I drive to the store and back home, it doesn't pop the fuse, so I have to also assume it's popping when it changes between the loops. I haven't had a good chance to trace out the wire (pink) to much. The underhood engine fuse goes inside, (I need to get a multimeter). Any ideas?

**EDIT I spoke to soon. It now pops when I start the car (well, goto ACC). So i guess that wire is grounding out.

 

And if anyone has a GM service manual for a 96, can ya scan the wire diagram pages?