Waterproofing Cars?

[whites75]

With winter upon us I was just thinking if people waterproof their cars in the way of covering their electrical parts etc to protect them from any wet.

Will the electrics withstand small bouts of damp/splashes from a wet racing surface without damaging the electrics or is it best to do some kind of waterproofing job on the car .........or can you just leave it as it is without doing anything?

cheers