I did something very similar, but I also added stickers onto the inside area of the glove box door. I did this because a mechanic might not even look inside to open the flap, so they will miss the sign.
Also, a good way to avoid a mechanic messing around with it is to just lock the glove box...
Thanks for the great instructions! It turns out the little piece that connects the servo to the flap was just dislocated (thank god it wasn't broken).
I found it easiest to remove the Automatic Windshield Wiper Computer (Red circles) and the Navigation DVD player (Purple circles showing the...