and its not like the game is drawing 15 amps for lighting at 120 volts...its only using 6 volts (I forget but I can say for sure those are not 120v lights! haha).
I use #47 in the backglass and some constant on lighting in the playfield. If the light comes on only when lit, etc, then 44s work for me. I like the tungsten glow personally.
Cheers,
Mike