If it's not too much trouble, post pictures of how you got access to the plugs from up top. I'd love to see. I'm very wary when it comes to removing the wiper housing now as I don't have the proper tool to remove the wiper arms. I have to use a pair of vice-grips and I don't want to damage the arms as I have no idea what they must cost to replace.
2000 Chrysler 300M [Daily Driver] 158,000 miles as of Nov. 2014
1996 Chrysler Town & Country LX [Always and forever the favorite.]
2000 Chrysler Town & Country Limited [Gone, but not forgotten.]