The difference is like night and day R1chard. VERY GOOD and impressive from the driver's point of view. Good call on the Ebay part source.
However, a little research tells me the differences btw the Xenon and Halogen light sources is the reason people are getting blinded by xenon lights in halogen housings. The focal-point of the light is at a different point in the reflector parabola. The reflector is unable to focus the light source properly. Thus blinding everyone and myself trying to use the road in NorCal.
This article discusses Euorpean ECE standards but many local govts here stateside have adopted these as well
Glare
Vehicles equipped with HID headlamps (except motorcycles) are required by ECE regulation 48 also to be equipped with headlamp lens cleaning systems and automatic beam levelling control. Both of these measures are intended to reduce the tendency for high-output headlamps to cause high levels of glare to other road users. In North America, ECE R48 does not apply and while lens cleaners and beam levellers are permitted, they are not required; HID headlamps are markedly less prevalent in the US, where they have produced significant glare complaints. Scientific study of headlamp glare has shown that for any given intensity level, the light from HID headlamps is 40% more glaring than the light from tungsten-halogen headlamps.
Lack of backward-compatibility
Countries using ECE Regulations will require that HID headlamps (except on motorcycles) have lens cleaning and automatic self-levelling systems, which usually are absent on vehicles not originally equipped with HID lamps. If a halogen headlamp is retrofitted with an HID bulb, its type approval or certification is no longer valid so the headlamp is no longer street-legal.
With budgeting shortfalls more police depts are ticketing for this. It would be a shame to save money on lighting accessories and have to pay a ticket AND then have to reverse the mod too.
Motorcycle cop on a lonely surburb street pulled over 5 cars by himself last week. Lined em up by the side of the road and gave them ALL tickets for speeding.
Dark tint and light-glare are no-brainers for police officers on the prowl.
This is one mod that is user friendly and a public-annoyance at the same time. Potentially, given the right circumstances: in the rain with a shiny road surface, on a mountain road, or with a kid trying to cross the street - a killer-mod (pun intended) too.
If that is what the OP is trying to do; I don't like it. Its tacky - looks good to driver and observers but not all girls (and guys too) like getting blinded by the playa driving by and potentially loosing control of their car.
