Here's the how-to and photos to replace individual gauges in the gauge cluster.
First remove the cluster (that's pretty straight forward)
Unclip and remove the clear plastic cover (red arrows show tabs to unclip) pic 1+2
Remove screws in pic 5 and then unclip tabs (pic 3+4) and remove black cover
Be mindful of the small filament still holding them together (green arrow)
Remove the 4 screws shown in red (speedometer) and the gauge can be pulled out the front of the cluster. This can be done with any of the gauges. There is nothing to unplug as the screws are what conducts the signals to the gauges.
Now the gauge out of the cluster. As you can see, this works with any of the gauges:
