maybe the fuse is too powerful... do lights even have fuses... i don't know but that might be it! unless the buld is too powerful. try halfords, they have hundreds of different for different makes and models of car! xx
O.K. fuses are rated in AMPS and as long as the fuse is the right rating for the circuit it is protecting it does not blow bulbs. ( NEVER PUT A HIGHER RATED FUSE IN THAN THE MANUFACTURER RECOMENDS) suggest you buy a new bulb and after testing to make sure the indicator works , allow bulb to cool before re-inserting into the indicator housing as when hot the filament is more fragile.