If you're smart, you don't. "HID kits" are widely available, but they are (all) illegal and dangerous. See the related link for a detailed explanation.
HID headlights refer to high definition headlights. These are headlights that use LED lightbulbs in them so drivers can see clearer and farther ahead in the dark.
You could find information about hid headlights on Wikipedia, at http://en.wikipedia.org/wiki/Headlamp. Hid headlights are usually attached to the front of a vehicle like a car or motorcycle.
The 2003 Infiniti G35 does not come with stock HID headlights. Instead, it is equipped with halogen headlights as standard. However, HID headlights were available as an option on certain trim levels or packages. If you're interested in HID headlights, it's best to check the specific trim and options of the vehicle in question.
...If they're hid, what difference does it make?
HID headlights are far more brighter than normal Halogen bulbs that are normally in headlights. HID are often thought of as safer because they have a blue glow to them and resemble daylight more than normal bulbs.
There are a couple of reasons why a 1999 Tahoe headlights may not work. A couple of reasons could be blown bulbs or the wiring.
No
From what i understand, HID kits are illegal unless you have a projector installed on your car so it controls the light output of the HID's. Projectors spread the light evenly and have a cut off point which don't blind on coming drivers. Don't just install the hid kit, replace your headlights with projects =)
To install aftermarket HID headlights on an Infiniti G35 coupe, start by disconnecting the battery to ensure safety. Remove the headlight assembly by unscrewing the bolts and disconnecting the wiring harness. Install the HID bulbs into the headlight housing, connect the ballasts according to the manufacturer's instructions, and secure them in place. Finally, reassemble the headlight assembly, reconnect the battery, and test the lights to ensure proper functionality.
of course
No. the headlights are terrible. I would be better off with a set of candles.
There are screws