Actually no. There are two gloves which light the guages. You do not need to unplug the cluster. Just unscrew the 2 screws on either side of the cluster, assuming you have taken the plastic surround off at this stage. I suggest using a magnetic screwdriver because you will (well I did) lose a screw down into the underpart of the dash. Once you have taken out those 2 screws grab the top of the cluster and bring it out towards you and down. On the top of the cluster you will see the 2 globes mounted on a white strip of plastic. If you cant undo them with your fingers (anti-clockwise) then use a pair of pincer pliers. Most of the time they are just loose or dirty and lose contact with the board. The part number is 47762 if the shop stocks NARVA items. I had to go to 3 auto places before I found them at an auto electrician.
Hope this helps.