Did you have any luck yet on the installation, i looked around, that is an excellent price on those, my little woman is interested in them.I'm fine with them staying on all the time, and I've seen vids of folks adding the fuse to the USB 2? slot so they are on whenever your headlights are on.
I just saw a switch that from china that is a perfect matched switch for out dash on one of the dummy's i think. that would be another option to the switch question.
Switch 4.40