... the
Leopold Kostal Gmbh & Co. KG, Lüdenscheid
Hello Peter,
Ah ..., one of my top-favorite topics - Kostal bakelite plugs !
Been a heavy collector of those - now I should have enough for my both cars ... 
Hi,
I believe these connectors where made by Kostal, with the "K" logo.
The Kostal company is based in Germany and is still around.
[urlhttp://www.kostal.com/kks/en/index.php][/url]
Hans
Hans shouldn't only "believe" this, because this is absolutely true!
The "KL" (kind of) sign means "Kostal Lüdenscheid", (corrected)The "LK" sign means "Leopold Kostal" (the company founder's name)),
that's the company were they were made.
Joe is absolutely right, initially they were made of bakelite, later types of plastic.
There are also "mixed combinations" where the lower part is still made of bakelite and the snap-on lid already made of plastic.
Some/many of these are still available from the MB dealership but unfortunately only the late plastic type; sometimes you'll receive the even later style of the W124 chassis, which do also fit.
Yes, those were used on all contemporary MB passenger cars. You can also use same-aged Porsches as parts donors
Best is to look out for used MB parts dealers.
Also an old used wiring harness of an MB pass car of the 60ies would be suitable. That's how I collected my missing bits. These are still around.
Hardest ones to find are the 12 pin male plug (e.g. for column switch) and the 6 hole female plug (for tail & headlight assemblies).
Best,
Achim
