First I am sorry on my bad english, but I will give my best

I have chance to got very cheap a xenon kit and I thougt to put it in the fog light because I have lens only in fog light. I have problem because I don't know what type of xenon lights(h3,h4,h7 etc) can I put in fog light???

So to understand better here is pic...

Red circle represent position where I want to put xenon lights...

With compliments for your forum from Sarajevo, Bosnia!

Bojan

Xenon's are completely pointless in fog lights, a fog light is designed to have a very short beam (so it is useful in the fog) so by fitting a Xenon kit all you will end up with is a very bright light that lights up about 6' in front of the car, it will be too bright to be useful in fog and the beam will also scatter everywhere.

Save your money.

Agreed with above. As cool as xenons can be wouldnt replace the fogs.

Yeah I know that but true is that i will got them for free and i also know that these chinese's kits are not so good. So i only want that blue style of light when I am driving in city zone, and to keep true halogen light on highway in my headlight position...

so is that h3 type???

If you just want a very blue fog light, why not just buy blue-tint halogen bulbs? I think the fog bulbs are H1s (H3s have a length of wire attached to the rear, and are normally found in auxilliary lamp fitments, not standard clusters like the Octy fogs), but they could be H7s, given that the fogs are projector lamps.