need help diagnosing a no-start, electrical problem Options

[6strngs]

So, the other day I went out to start my car, and it was cranking, but not starting. I turned it off, then tried again and nothing happened at all, no clicks, nothing. So I took my dad's car to work, but then when I got home, I tried again and noticed that when you turn the key just to the on position, nothing turns on like the clock, radio, any dash lights (CEL, SRS, etc) except the door ajar light. so I start checking fuses, notice that my 30A fuse for "AM2" is blown. I replace it with a spare, and get back in. turn the key just to the on, and everything is fine, the lights turn on and everything. then I go to crank and it turns over once and then nothing, it blew the fuse again. So basically my car is blowing the AM2 fuse everytime I turn the key to crank. I'm looking at the wiring diagrams but I'm not very good at diagnosing electrical problems. So any help appreciated on places to look for shorts.

[6strngs]

What I was doing was plugging the test light in place of the fuse. then going along the wire in the diagrams and unplugging connectors or fuses to see which connector along the line causes the light to stay on and find the one before it which causes it to go out... so that the short is somewhere between those two points.

anyway, I pulled my wiring harness out today. didn't take a good look at it, but I did notice that one of the wires going to one of my fuel injectors was actually pinched beneath my valve cover from the last time I had the valve cover off. if, over time, the insulation had melted due to heat and exposed the wire to the head, it would cause it to short. I'm not positive that's what it was, but it's likely.