Are those the EOM Ford plug wires? They look aftermarket. I'd be curious to see if all these other owners that report water problems have aftermarket or OEM plug wires. Maybe try switching to OEM and see how it goes after you get the wells dry.
EDIT: After looking more closely, I see those indeed are aftermarket plug wires. I also see that there is no vent hole in them. My Honda shares a similar spark tube design and has one way vent holes in the plug wire boot to keep condensation from building up in the tubes.
Definitely try out the OEM plug wires from the dealer and see how that goes.
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