Unknown hazard switch

[rasc]

Does anyone knows for what car this hazard switch is? It has no resistance. The top side of the switch is round.
Is this for E9?

Thanks and best regards

 

[2000CS]

I believe the only function of the resistor is to dim the illumination bulb when the lights are on.
Verify your particular car's wiring before using.

 

[sfdon]

Looks like none of mine.

 

[Arde]

Looks like none of mine.

Yep, that is definition of unknown.
I recall there were 6 pin and 8 pin variants. Our local expert for that was HBChris.

 

[jmackro]

I recall there were 6 pin and 8 pin variants. Our local expert for that was HBChris.

My 1970 2800 CS has a 6-pin switch. I believe that the earlier cars used the 6-pin versions, while later cars had the 8-pin. Why the later cars needed the two extra terminals and when BMW switched over, are unknowns to me. Perhaps some California emissions thing.

 

[Arde]

My 1970 2800 CS has a 6-pin switch. I believe that the earlier cars used the 6-pin versions, while later cars had the 8-pin. Why the later cars needed the two extra terminals and when BMW switched over, are unknowns to me. Perhaps some California emissions thing.

Jay you write an explanation of how the hazard switch affects emissions and you get a Doctorate Honoris Causa from me!

 

[2000CS]

How about the reduction in bulb electrical consumption while lights are on reduces alternator load, thus contributing to .000001% reduction in vehicle engine emissions
Of course resistor heat should be taken into consideration in the overall equation.

58d (between 49 and R) has no direct internal connection, it goes through the resistor to the solder point, which has an internal small contact tab near center and engages central pushbutton.
I was building a plug-in hazard bypass from an old switch once and just had to figure out the difference.