On 12/19/2010 8:19 PM, mm wrote:
snip

It's dirty enough to not let the bell work, but not so dirty that the
light doesn't go out. That's not hard. The neon light has a fairly
high resistance. The button when closed will have a resistance lower
than the light, so most of the current will bypass the light.
snip

What neon light? I thought we were talking about a doorbell button.

No neon light I've ever seen will fire on 24 volts.