The single gauges have 4 little tabs on one and 3 on the other that must be carefully straightened to remove the bezel. Reverse the proces to reinstall them. If you break off the tabs, you will have to glue the bezel back on. The speedometer bezels are fairly easy to remove. You do have to be careful around the areas where the pastic like material allows light into the speedometer...the metal is thin there and it is fairly easy to break. I have never removed the bezel from a dual gauge.