I picked these up on Amazon. Bar code number is 2xBA20D-100W-W. Go to the GENSSi web site and look up BA20D bulbs. These are H6 bulbs for Motor cycle head lights.

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How do they fit ?

They fit into the fog light socket as the base is the same as the original 35W bulb.

What is the Kelvin color?

So the "D" in the bulb description is for dual filament aka, motorcycle headlight has high and low beam, that's why the original bulbs are "S" for single--did you have to bridge the connection to kick it into high beam mode or just letting it sit on low beam, or does it go into high beam mode naturally?

Just installed them. The LED's at 50w are going to be much brighter than the original 35w bulb.

That's weird. LED's shouldn't draw 100W. I'm guessing (and hoping for your sake) that the 100W is a marketing ploy to say they are equivalent to. If not you will have issues without a relay.

They are not drawing 100W, the out put is equivalent to 100W.

Sounds much better interested to see how these work.

the color temperature is 6000 Kelvin, the color shows as "white"

I prefer to transform the FOG light to DAY Light to avoid the constant activations of the Headlight:
Adhesive low thicknesses LED light POWER unknown BUT effective works as DAY Light
https://photos.app.goo.gl/ZPP79uJhnXw8KeCT6
connected to TAIL light - I have protected the LED lights with TWO Yellow HELLA glasses
https://photos.app.goo.gl/KMg7JuxFKjW9J2v88
https://photos.app.goo.gl/goVW9edwwpvwywtu7

Despite being marked as D for dual, they are actually single so no switching is needed or possible. I guess the big question is how does the light pattern compare with the original filament bulb. The position in the housing and the reflector were designed for the filament to be in a particular position that the LED does not appear to duplicate. I would be interested in some sort of a comparison for the beam spread.