1)As opposed to Halogen Lamps, The HID 'capsule'
does not have any filaments and hence its not
designed to Operate at a fixed power. Ballasts
decide The power that will be "pumped" into the
capsule. If you buy a 35W kit or 55W kit, Bulbs stay
2) kelvin CCT is decided by the Bulb, There are rare
earth metal halide salted added to the capsule that
decide how it will glow. However a 55w HID
ballasts heats the salts to a higher degree and
provides somewhat Whiter, washed look.
3) Yes any Bulbs and any ballasts will be
compatiable (Assuming they're automotive and 35w
or 55w ones). However its not recommended to
swap Only 1 bulbs or Mix Bulbs. As the Bulbs age,
The salts (That make white light) deteriorate and
bulbs shift their CCT towards Blue.
An age old 6000K bulb may look like 8000k at the
end of Life. Mixed bulbs will look funny on the ride
and could attract Cops etc.
4) Pumping higher wattage sure costs the Life of
Bulb. But thats still longer than you'll need. Only
TRUE 50w Bulb i've seen are the millitary spec
Philips "FATBOY" DL50. Forget about getting them
in India or anywhere else. Whatever you get in
Consumer market are just overdriven 35W bulbs.