[davemc]

The 37-624 is a 6 volt set. The pilot lamp is in series with the 1C7 and 1J6 tubes, both which need 2 volts at 240ma. The pilot lamp is shunted by a 16.7 ohm resistor, which means it needs to be 2 volts at 120ma, since the voltage table says that the 1C7 and 1J7 filament voltage is 2 volts each and the supply is 6 volts.

The original lamp was not marked, and was destroyed getting it out of the typical Philco pilot lamp socket mess. But it was a bayonet type and tubular shape or T-3-1/4 type.

I don't see a lamp rated 2 volts at 120ma in my catalogs. The #49 is rated at 2 volts at 60ma, but is a globe type.

Anybody know what lamp I should use? I hope it's not one of the rare types no longer available.

Thanks!