Just to add on the legality matter, not to stir and for the OP's sake.
The reason HID Kits or Conversions are illegal in the UK is very simple. The first reason is because the general public know nothing about how they work so you get a bunch of idiots fitting them to halogen enclosures and every motorist for miles cannot see a thing because of the glare but hey it looks cool right? No...
Secondly, the actual discharge of a HID Bulb is a difficult thing to setup because a simple change of ride height or road surface can cause the projector cut off point to face upwards and again blind oncoming traffic, even specs of dirt on the lens of the lights can cause the light beam itself to fragment and again blind on coming traffic.
So in order to have a Legal HID / Xenon (its much of a muchness) setup in the UK you require that:
- The vehicle be fitted with self-levelling Projectors that change in real time to the movements of the vehicle.
- The vehicle be fitted with headlight washers which function at least once during the operation of the headlights themselves.
- The vehicle be fitted with approved projector enclosures.
- The bulbs used are a certain colour temperature, too blue can be mistake for emergency vehicles or police for example and too orangey will produce less light output (kinda pointless really). OEM Xenons run at 6200K and most HID Kits are either that or 7000k either or will look identical to a OEM Xenon in any car.
Here in SA we produce cars for your market so whilst the cars we produce (Golf 7 for example) have to adhere to your strict laws here locally nobody gives two sh*ts as long as its in a projector housing the metro cops and police cant do a thing, especially if the product is locally approved by our governing body (SABS).
Almost amazing seeing you guys actually caring about the law and its relevant so seriously over a set of harmless lights, damn its scary!