Like many others, I have opted to install HID bulbs. This will serve as a guide with pictures for people that want to change to these better bulbs! I will only be covering on how to install the low-beams too.
I'm not going to cover which HID sets to buy. They can range anywhere from $70.00 on eBay, to $300 for the more expensive McCulloch sets. To be honest, I dont know how much of a difference there is - I don't know anyone with an expensive set to compare them to. I bought the cheap eBay ones, as many other members have done, and have been MORE then pleased. The principal is the same for the installation.
Also, i'll make a quick note about the temperatures.. around 4300k is "pure white light." Anything higher, you lose light output but gain a more bluish tint. I have installed a 6000k HID set, and on my Aero Blue Coupe they look more then spectacular. The light output is incredible also, but if I had to choose again I would maybe go for a 4300k kit or 5000k. You can search for other pictures / charts / etc on these different temperatures.
First I will make a couple notes about the installation. FIRST WORK ON THE DRIVER SIDE! There is SO MUCH MORE ROOM, it is easier to see what you're doing, and understand how the bulbs go into place.
Secondly, if you install your HID's and you think they suck / light is being scattered / it barely illuminates anything. 99.99999% of the time YOUR BULBS ARE NOT SEATED RIGHT. This is THE MOST DIFFICULT part of the installation, making sure the bulbs are in place. The bulbs sit DEEP DEEP in their socket.
Let's get started then. This is a picture of my car, one HID bulb and one OEM bulb.
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I also have some night shots in my gallery of the HID bulbs in action.
First, take the rubber cover off of the lower beam light.
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This is the one with the red/blue wires sticking out. (Sorry I took the picture AFTER I installed the hids, your light will have no wires hanging out.)
Inside you should see the harness attached to the bulb. Like this:
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Pull on the black plastic and yank the harness off of the bulb. Pull straight back, there's nothing else holding the harness in place.
Now with the harness off, take a good look at how the bulb is seated with the spring clip in place. The key to an easier installation is knowing how the bulb goes in, sits, and is held in place, so you can emulate this instead of guessing on how the bulb goes in.