I would guess you are not the first owner. LED's are a common fix to replace the standard bulbs that are non to bright particularly on the speedometer.
They do blow as you have discovered.
Its your choice either replace them with LEd's or replace them with standard bulbs.
If you track back you (use my name to get the link) will find a fiull listing of what LED replaces what.
I changed all mine and would not go back now.
This is the source to get them.
http://www.ultraleds.co.uk
Regards
Chris