ah yes the wire harness days....
about 2 years ago before my truck was on the road i installed a new harness and had everything all trucked away nicely and neat. I stored my truck that winter under a huge tarp to keep the blowing snow away from it. Well the tarp never kept out nature and a cat made a home in it. It decided to mark my truck as its own and actually spray a few times in the exact spot. that spot was actually up in arc to the underside of my dash on the drivers side right where my nice main harness and fuse block was.
That spring it required a complete tear down and interior sand blasting and new primer. The full wire harness from bumper to bumper had to come out and be hand washed a few times using different chemical to remove the ammonia crystals from the fuse box. Now im a master at removing and installing harnesses.
Just thought i would share that story.