Happ Controls sells these, we use them in the slot machines in our casino. The bulbs are either #73 bulbs at 14vdc or #86 bulbs at 6.3vdc. Not sure which ones you need. My guess is the bally midway power supply probably supplies 12vdc to these so the #73 bulbs at 14vdc are the ones you will need. Check your schematic for sure though.
Happ Controls sells these, we use them in the slot machines in our casino. The bulbs are either #73 bulbs at 14vdc or #86 bulbs at 6.3vdc. Not sure which ones you need. My guess is the bally midway power supply probably supplies 12vdc to these so the #73 bulbs at 14vdc are the ones you will need. Check your schematic for sure though.