Join Date: Sep 2000
Location: Shrewsbury, MA, USA
Xenon lamps are not true HID lights, they are what used to be called Halogen lamps except the bulbs contain xenon gas instead of halogen gas, and the bulbs are typically coated with a blue coating to appear more like true HID lamps. HID stands for High Intensity Discharge which produce light by striking an electrical arc across tungsten electrodes housed inside a specially designed inner glass tube inside the bulb. HID headlamps do not use a filament. Instead, they contain an inert gas (Xenon), which emits light when it comes in contact with a high-voltage electrical arc. HID lamps require a high voltage power supply (ballast) that produces several thousand volts (15,000 to 20,000V) to the create the arc inside the bulbs, and then will operate at around 80 to 90 volts once the bulb is warmed up. If you can buy anything called HID lamps for less than $300 (and more like $500) for the bulbs and power supplies alone your buying H4 style Halogen bulbs. The HID assemblies for my Jimmy are over $500 a side for the housing assembly the HID bulb, and the power supply (ballast).
The H4 Halogen style bulbs do just plug into the original 3 prong wiring harness. All you need is a new 7" diameter lamp housing that will accept the H4 halogen (or Xenon) bulb and your good to go. If you increase the wattage of the bulb (which is illegal) above the 55W/60W rating of the original bulbs, you may want to run relays due to the increased current draw of the higher wattage lamps.
1969 Indy Pace Car
350/300HP RPO Z11
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