I bought an old-school inside rear-view mirror with 1960s day/night lever technology. It has a lifetime guarantee against leaking electroluminescent fluid onto your interior. Part number is F5SZ-17700-AA and cost $33.68 at Earnhardt Ford in Tempe. That's double what www.fordparts.com wants, but oh well. You guys got me scared about leakage, and I didn't want to wait for shipping.

Not as neat as the factory style, but you can't beat the price.