Early W108 strange switches - Mercedes-Benz Forum

 
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post #1 of 5 (permalink) Old 10-30-2014, 08:58 PM Thread Starter
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Early W108 strange switches

I removed some unusual switches from an early 250S (Euro) at the junkyard and I'm a little confused about them.

First, there is a lit switch that has a fiber inside that illuminates a knob that I unfortunately don't have. The method of illumination is basically the same as that of an early fan switch from a W111, W113, etc. But the design is entirely different. I have no idea what this controlled. It's on-off (2 position). When on, the brown wire grounds to both the yellow/green wire and the black/red wire and if there is power going through it the light comes on when the switch is pulled out. Ideas?

Next there is rather ordinary switch with three terminals. When the switch is pushed in the center and rear terminal ground. When the switch is pulled out the center and front terminal ground.
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Currently: 1967 250 SL, 1963 220Sb, 1965 300SE Lang, 1971 280SE parts car, 1972 Alfa GTV, 1965 Alfa Duetto, 1993 BMW R100R
Past: 1971 250 C, 1985 300 TD, 1967 250 S, 1968 280 S,1981 300 D, 1982 280CE, 3 Facel Vegas, Borgward Isabella Coupe, Alfa 2600 Sprint, Volvo P1900 (yes), numerous less interesting Volvos, ...
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post #2 of 5 (permalink) Old 10-30-2014, 09:03 PM Thread Starter
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More strange switches - hazard

Then I have a very strange hazard switch. I assume this was something added to the car upon importation, but really have no idea. The brand is Kolb and it has a bunch of numbered terminals on the back side. The face of the red knob unscrews and there is a small light bulb inside.

Is this unusual?

Finally what appears to be a balance control for the radio. The radio was not present but there was what looked like a Becker amplifier bracket on the firewall (which I got). I have never seen a small-knob balance knob in a Mercedes before and the wires in back just scream Becker at the top of their tiny lungs.

Unusual? It was mounted behind the dash but looks to be something that could instead be mounted under the dash. The knob is held in with a set screw.
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Currently: 1967 250 SL, 1963 220Sb, 1965 300SE Lang, 1971 280SE parts car, 1972 Alfa GTV, 1965 Alfa Duetto, 1993 BMW R100R
Past: 1971 250 C, 1985 300 TD, 1967 250 S, 1968 280 S,1981 300 D, 1982 280CE, 3 Facel Vegas, Borgward Isabella Coupe, Alfa 2600 Sprint, Volvo P1900 (yes), numerous less interesting Volvos, ...
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post #3 of 5 (permalink) Old 10-31-2014, 12:58 PM
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Vehicle: 1970, 280SEC 3.5
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Hi again, the red hazard switch seems to be a German after-market device. When the cars were new, they did not come with hazard-lights, as it was not required. But somewhere in the 1970s it became mandatory for all cars, so many older models had them as after-market devices installed. Most were placed underneath the dashboard in order not to ruin the wood. But I have also seen some of them in the dashboard with a hole in the wood.

The other switch does indeed look like a Becker switch from underneath the dashboard. But in order to conform with the design of the other car switches, it could also have served other than radio functions. Usually switches/knobs with this design were found on the dashboard to control front and rear car audio loudspeakers

Present cars: MB W111 SEC 1970, Jaguar X300 Sovereign 1997, Ford Mondeo 2008
Past cars: MB 170V Cabrio B 1936, 170S 1950, 220 Cabrio B 1951, 300d 1958, 300d Cabriolet D 1960, 250SE 1966, 300SEL 3.5 1970, 350SL 1972, Alvis TC100 DHC Grey Lady 1954, Jaguar 420G 1967, Jaguar XJ40 Vanden Plas 1993, Range Rover P38 1998
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post #4 of 5 (permalink) Old 10-31-2014, 01:45 PM Thread Starter
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Thanks. Have you got any ideas on the first switch from post 1 of this thread? It seems to be the same switch as these two ebay listings:

Light Switch Mercedes 180 190 220A Ponton 220S W121 W180 250S W108 Fintail W111 | eBay
and
Switch Mercedes with Indicator Lamp Mercedes w 100 w 110 w 111 | eBay

although I believe the bezel on the second one to be incorrect.
Scott

Currently: 1967 250 SL, 1963 220Sb, 1965 300SE Lang, 1971 280SE parts car, 1972 Alfa GTV, 1965 Alfa Duetto, 1993 BMW R100R
Past: 1971 250 C, 1985 300 TD, 1967 250 S, 1968 280 S,1981 300 D, 1982 280CE, 3 Facel Vegas, Borgward Isabella Coupe, Alfa 2600 Sprint, Volvo P1900 (yes), numerous less interesting Volvos, ...
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post #5 of 5 (permalink) Old 10-31-2014, 02:14 PM
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Hi Scott, sorry I'd love to help, but I don't know exactly

Bernd

Present cars: MB W111 SEC 1970, Jaguar X300 Sovereign 1997, Ford Mondeo 2008
Past cars: MB 170V Cabrio B 1936, 170S 1950, 220 Cabrio B 1951, 300d 1958, 300d Cabriolet D 1960, 250SE 1966, 300SEL 3.5 1970, 350SL 1972, Alvis TC100 DHC Grey Lady 1954, Jaguar 420G 1967, Jaguar XJ40 Vanden Plas 1993, Range Rover P38 1998
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