Maybe this will help
Speedo Assembly
After the speedometer bucket is released form mount 10, remove screw 13 and that will allow the front speedo mount ring to come out of the bucket.
Unplug the speedo and annunciator board. Remove the two ny-lock nuts from the back of the speedo mount bracket which will release the speedo from the ring.
Then use a small flat head screwdriver and remove the c-clip 5 from the back of the speedo ring mount this will release the annunciator ring from the speedo ring.