Behind the climate control switch panel is a light harness which has several
bulbs, one of which is a single bulb which illuminates some fiber optic
strands which lights up many of the switchs in that area. I believe the
first bulb in that "harness" is the one which illuminates the fiber optics.
The others are plugged into various sockets on your climate control box. The
bulb pulls straight out from a plastic socket and is rather expensive (in my
opinion) from your MB dealer. I usually check one of the discount parts
houses (such as Pep Boys) for replacements. If you need further
removal/install help Tiger is a genius at this sort of thing.
It's way back in the center behind the climate controls.
Follow the five slender black fiber optic leads to the socket.
Two go to antenna switch (for up & down logos).
Bulb was just over a dollar Canadian at my dealer.
Use the bulb that's in your headlight switch, (I think they're the
same) and replace that easy-to-access one later at your leisure.
Bulbs pull straight out. Don't twist. Put on your magnifying glasses
and make sure the wire leads run straight up opposite sides of the
On a similar topic, has anyone successfully repaired their Fiber Optic
instrument lamp wiring?
Or am I the only fool to pull too hard on that little black lead not knowing
what it was?
I need one of the leads repaired in my '74 240D, but am at somewhat lacking
in Fiber Optic Cable Repairing skills. . .
Thanks in advance,
There is nothing to it... just tape it back up... or hook it back to where
it is supposed to be... maks sure the tunnel path will allow light though to
the other side... Perhaps a heat shrink tube will do the job best.
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