Thank you Tiger. That was very quick indeed.
Unfortunately replacing the fuse was not enough. I
switched the ignition on and moved the arm to a
blinker position. Then I shorted out the # 12 fuse
but there was no blinking. The brake light didn't
work either. Seems like I have more work ahead.
Alright RF... I am staring over with you.
As for the ignition switch, the one they give you is the correct part. I
punched in your part number and it came back to the exact same part you
ordered. MB use the same switch for long long time until they went
I am thinking... have you change the brake switch? The switch by the brake
At long last, task completed. In the last few
weeks I learned more about the car than I had in
the previous ten years.
After scouring the car looking for bad
connections, especially grounded ones, I replaced
the ignition switch and then solved the cylinder
lock problem. The key would not turn because it
could not go all the way in. The cylinder was
about 1/16" too far out and neither it nor the
key could turn. After much struggling, I
eventually figured that the part, that the 2 short
prongs of the cylinder lock was going into, was
not the right place. I removed the cylinder lock
again ( yeah, a dozen times) and I was able to
rotate the part, that those two prongs fitted
into, with a screwdriver. It was spring loaded and
snapped into place. Then I reassembled and it
worked just fine.
The worst task in that job, by far, was removing
and replacing the instrument cluster,
especially connecting and disconnecting the
speedometer cable and the oil pressure line. There
is a clamp on that speedo cable in the engine
compartment but it is so far down that loosening
it would have to be done from underneath the car.
If the clamp had been higher up, it could be
temporarily disconnected to make the job much
easier. Instead, removal and reinstallation, have
to be done by working a hand and arm up under the
left front corner of the dash and then in behind
the cluster and finally a lot of struggling. There
is not enough space for a hand if the cluster is
in place, so it has to be held out an inch or two
from where where it would normally be located. Not
only that, but there are sharp edges and points in
there too.To tighten the oil pipe a 10 mm wrench
has to be used and in the small space it was very
tricky. Fortunately, after getting it hand-tight,
less than 1/4 of a turn with the wrench is enough
to tighten it. Another problem was keeping the two
thick pads that are in that area out of the way.
Their purpose is probably for deadening the sound
from the engine.
Finally I took the little girl for a spin and we
were both very happy :-)
Thanks to all who contributed.
To be honest Tiger I am not sure, so I am keeping
the original switch, just in case.
I had played around so much and spent so much time
installing and uninstalling
the instrument cluster and the locks that I
finally was too lazy to put back the old switch to
do another test.
At one point I did a quick test by clamping that
old switch to its harness (hanging down under the
steering - not attached to the lock) and used a
broad screwdriver to turn the switch to position
2, where the brake lights and blinkers come on. I
left it there, pressed the brake pedal and then
checked the blinkers and all were ok. This
suggests that the old switch is probably ok and my
cleaning up the various contacts may well have
been the cure. One of these years I may have
another opportunity to try the old one again but
I'd rather not. If I ever have to, I'll certainly
get a new clamp on the engine for the speedometer
cable, so that I can reach it from above. That
would make it much easier to move the cluster in
and out, by far the biggest task in working in the
area behind it.
Thanks again for your support.
Mmm... ignition switch wears out... the position of the key detent and the
ignition switch itself may not be aligned to ensure proper operation. I'd
still suspect the ignition switch.
You have to consider how old that switch is and how many cycles it has been
through... it is bound to wear out.
You are welcome.
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