What are HID headlights ?
• Note – before you consider fitting a HID kit, please read this page from Department for Transport as they may be illegal. • this explanation from Steve ‘SHARKYMGF’ White from MG-Rover.org ; “HID stands for High Intensity Discharge. As you know normal bulbs have a filament suspended in a gas. The gas used (Halogen, Xenon etc) and the wattage that the filament operate at both effect the brightness. A HID bulb is filled with Xenon gas but it has no filament. It has an electrode at each end and when a voltage of 20,000 volt is passed through it an arc is struck between the electrodes. The arc heats the enclosed metallic salts to vaporization point. Once vaporization of the salts has occurred the HID bulb produces its full light output. This ‘warm up’ process take about 4 seconds. To generate a stable voltage that high, the bulbs are connected to a ballast unit (or inverter). The power drawn by the ballast unit is only 35 Watts, so less than a conventional bulb, but the amount of light pr
