northdublin
Petrolheads
hids come standard on the b4 and mine passed the nct no problem. there is nothing worse then an oncoming car with out of focus hids. anyone connected to the electrical trade will know that craic with the differant colours (kelvin ) as its used in most forms of lighting, ie flouresent, metal halide and hid. as posted above 4300 k is the closest to natural daylight(ndl) and anything around that colour temp is known a cool white and anything below is known as warm white. metal halide and hid lighting have been around for ages but only in recent years when electronic ballasts came along where they used in cars.