I have a little bit experience with installation of HID kit when I owned my Mazda6.
But it seems to me that on RX8 it's harder to reach the headlight assembly due to the compact design.
I searched the forum and haven't found a write-up of how to replace the HID bulbs. Does anyone know if there is one 'how-to' thread here, or somewhere else? A link will be appreciated.

I assume the front bumper and assembly need to removed to replace the bulbs, is that true?

 

yup there are like three or so bolts behind the bumper cover underneath the headlight to take it out... other than that its one bolt on top and a push clip and your done. Not sure about the DIY thread for them, but good luck!

 

i want to change the bulbs on my RX-8, how can you tell if your ride is already (hid)? Also how do you get to the fog light assembly to change those bulbs as well?

 

Thanks, I just read a DIY thread about replacing stock HIDs somewhere (maybe DIY section) yesterday. It turns out a pretty simple to do. But I think removing the two front wheels could make things much easier. (But not really necessary though). I will post the link here if I can find it again.

To tell if you already have HID installed? Stand in front of the car, let a friend turn on the low-beam headlights. If they are HIDs, you will see the bulbs take about .5-1 second to get lights out but it's kind of dim at the first beginning. Right after that, it will take about another 2-3 seconds to reach it's max light output. All of these are because HIDs bulbs are totally different to traditional halogen bulbs --- there are no filament inside. If you don't see that kind of lighting change, you don't have HIDs.

HIDs have much more lighting output and if I 'm right, the stock HIDs are 3800k or 4000k, which give you a nearly 'pure white' color if you look at them from a certain distance (like 20 feet or more).