Mirror Defrosters on 05 Armada SE

[TeKKiE]

Simple question, tbh.

Do the defrost signs on the rear view mirrors illuminate when you activate the defroster in cabin? I can't say for sure whether my mirrors actually defrost or not, and it's rather bothersome. It's not that I really NEED them, since snow and whatnot doesn't typically collect on the mirror face itself, but I'd just like to know that it works. Kinda hard to tell if the mirrors don't illuminate, though