Andrew,
There is one bulb that illuminates the switches via fiber optic cable.
The bulb sits in a holder that provides for all of the fiber optic lines
to "catch" the light. This holder is located in the depths of the center
console on the drivers side. It sits against the console between the
klima unit. To access it, remove the panel with the switches (defroster,
ant., etc.). With that out of the way one, with care, can see the holder
and trace the fiber optic lines to what we call the octopus. In general,
the klima push button unit does not need to be removed, but it may help
you if you find the extra room will help. The bulb is the same as those
used in headlamp switch for the rear Euro fog indicator as well as those
used in knobs for the w123 with manual klima control. This light is
fused on the same circuit as the rest of the instrument lamps.
With regards to the shift indicator lamp, there is a bulb located on the
side of the shifter mechanism. It too has a plastic holder. The bulb
used here is different than that used for the fiber optics.
Regards,
Mathieu Cama
andrew strasfogel wrote:
I recently swapped the radio in my 1983 300TD, and last night noticed
that the four switches in the slim wood panel above the ACC push
button array were ALL dark (for the antenna, rear hatch light, rear
w/s wipers, and rear wiper washer pump). These switches are lit by
thin fiber optic cables powered by a "mother" light source, IIRC.
My questions: Where is this light source located? Is there a fuse
that powers it? Could I have somehow disconnected it or knocked out a
bulb when swapping in my radio?
Thanks in advance,
Andrew
1983 300TD
276 K miles
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