Bulb size

93 xj np231 ax15

Does anyone know the bulb size for the hvac controls backlight?

#74.

The FSM says that there are 2 of them, but I found only one on mine. Must've been
a production line change.

The locking lugs on the 1/4-turn black plastic bulb socket that are really brittle
so be gentle when twisting it off.

I was wondering because the bulb said 39 but couldnt find a buld that size. Thank yoy