Originally Posted by wpoll

Found the video...

https://youtu.be/GDApyupw_1Y?si=iBrx3P0dgc6wtWHU

You can use a hot wire, a fine soldering iron or a 1mm drill bit to make the two small openings.

The bulb needed goes by a few part numbers, depending on the vendor: -

Osram - 64113
Flosser - 4010
Narva - 17833
Philip - 12024



Being a halogen lamp, you should either avoid touching the glass envelope at all (use a tissue to install them) or wipe them down with iso-propyl alcohol after installing them.