Re: wire harness removal
when i pulled a motor i just followed the wires and unplugged them wherever i could, as soon as they went past the fire wall.
you would probaboly be best off to get a "new" or another wireing harness and mach it up, mark which plug goes where or even plug in the new harness as you unplug the old one (from what you said i figure your replacing). MARK YOUR WIRES you will not remember every single one of them all though every plug is different.
to get the fuse block unpluged you have to pull out one little bolt, or screw, on the motor side of the firewall, then you can seperate the wires pull the box to the inside, and wires to the motor side.