I pick up my 298 Eagle tommarow and this among other things ( AC bolts) I have learned from this forum will be one of the things I take a look at.
Seems to me that a they should use a weather proof box.
Even if you turn the wire nuts facing up the amount of moisture getting in the box will still cause the copper wire to oxidize.
5 bucks for weather proof box and connectors would be an easy fix.
I guess they have to draw the line some where to keep cost down.
Something else I would suggest is some anti oxident paste.Lowes has it in inexpensive small tubes,just take each nut off and squirt a little in and replace.
2010 298 RLS Eagle
99 Ford F-250
1 Toy Fox Teror
1 Tiny Chi Chi Wa that rules all of the above.