MF! VX Kaput

[SuperBoomTurbo]

I'e changed my mind on the electrical versus mechanical issue. Mechanical is way easier to diagnose and fix!!

Took a good run at the ol girl today, starting with fuse chasing, i.e. Checking everything in the cabin and under the hood. Nada. Did the 2 second fuel thing and got a few drops, but not consistently. One time I would, two others and nothing. Not sure what 2 seconds of fuel is supposed to look like, but I was pretty sure it was more than a few drops. I ended up cutting the access hatch and replacing the pump. Annnnnd.... nothing! Still cranks hard, no bang.
I found that the negative battery terminal clamp is pretty much maxed out on adjustment, so that's going to get replaced next.
I also tried swapping the pump relay with the horn relay and both worked fine (pre-hatch cutting) and checked all the wiring looms that were moderately exposed. Other than a coating of road grime, I didn't find any bare wires. I didn't bust out the multimeter, but I was reading last night that the PCM may have something to do with this? Anyone happen to know where its located, as its not labeled anywhere in the main or cabin fuse box.

Also while rooting around, I found some moisture on the driver side floor mat. Pulled that up and found a bit of the fuzzy white mold. Shiiiiiit. My vx has what I'm pretty sure isn't a factory moon roof, which has never worked particularly well since I've owned it. It has power and moves on the right days, but other times it won't budge. I'm thinking the weather stripping might be toast as I found some signs of dried moisture around a windshield pillars and down the door hinge areas, so I'm hoping that didn't drip down into the dash and short out a ____.

While in the tank, inside it looked immaculate as far as old gas tanks go, and much to my surprise, it was full to the very top of the pump assembly. That dead fuel gauge is still the prime culprit, just not sure where to go from here.

[SuperBoomTurbo]

After weeks of chasing problems, checking wiring and fuses/relays, I finally decided to just replace all the fuses starting under the dash, cranking each time.
Lo and behold, after swapping the CB-3 15amp 'Engine' fuse, she fired right up!! Whoa!!
Well, it rained for a few days and I haven't driven it until today. Got to Oreillys and back and once again, it died pulling over the hump in the driveway. Same fuse. Guess that means there's a short somewhere?
I went and got one of the fancy 'glows if it blows' fuse packs to make this a bit easier. Replaced, revved the motor, pop!

So my question for anyone (I'm good on mechanical drawings but wiring diagrams confuse the hell out of me) Do you know where this wire runs around before coming into the dash fuse box?
I found one loom that Firestone had diverted after botching my power steering pump job (long, depressing story that THEY caused!) and that will be my first look-see. Currently I've tucked it under the radiator area and a convenient hardline, but it had been making the occasional 'takka takka takka' sound, so I'm betting that sucker is rubbed through.

Edit: In the case of the Firestone incident, if any of you are curious how Firestone works on the Vehicross, you can enjoy a fine bit of reading with my experience here:
http://www.bbb.org/fort-worth/busine...ints#breakdown
it's the first complaint on 11/20/2014. I don't put this up for attention but a consumer warning.