At 08:08 PM 7/28/2014, Tom Young wrote:
>Thanks for the response.  I checked the two fuses mounted low on the pillar
>behind the driver's seat and they looked fine.  I inspected the bulb under a
>strong (20x) magnifier and I'd say it's fine, too.   But my voltmeter says
>that the socket is only getting 9.75 ~ 10.0 volts, so I'm still wondering if
>the issue is the bulb.  Maybe a fluorescent is in my future, but I'd sure
>like to understand why this setup isn't working.

Check the bulb for open circuit with your meter.  Continuity never
lies and you don't have to deal with the optical distortion created
by that little quartz envelope.  Hurray for stereo scopes in general,
though.  I treasure mine and built an industrial-type stand for it
using drill press parts.

If you're only getting ten volts on an unloaded socket, chances are
you've got a bad contact, the voltmeter puts only a tiny load so it
would have to be pretty bad contact to drag it down like that.  The
inside light is powered off the driver's door light.

Yrs,
d