Hello matey! easy peasy there are 2 plastic tabs as you look straight at the clock panel on either end, 1 next to the rear wiper button and the other is near the clock adjusting button, they look part of the panel but are little clips that hide the 2 screws that hold it all in, carefully remove the tabs with a small technical screwdriver and you'l see them, remove them and open the ashtray and pull the clock panel forward and unplug the wiring connectors, then you can twist the bulb out, i did mine not long ago but replaced the hole clock as it wouldnt adjust the time, have you a spare bulb, they maybe the same as some of the bulbs behind your main clock pack ie behind speedo rev counter etc, or fiat will have them, good luck Ant!