The unfortunate proplem hauling on sloppy roads is that the salt/calcium sprat will get everywhere on and in your tractor.
Myself if I was hauling my own equipment in those conditions it would get the best rinse down I could do when I got it home,
after the rinsing/washing I'd try and blow as much water off and out of the wiring harness area,
then I have a gallon jug of WD40 sitting there with a hand sprayer or pump up sprayer and I would give all my wire connectors and
wiring harness and linkage a good WD flush.