Here you go-
If you install them, use double sided 3M automotive emblem tape, not glue. Glue will bleed out thru the rings and make a mess of your gauges. The 3M emblem tape will keep the rings on solid, without mess.
I've had em on for years, and love em. They look cool at night too, cause when your cabin is all dark and you have the light emanating from the gauges, some of the light bounces off the rings.