Its the same process for 99-00 as well as 01-05.
-oven with timer (or get seperate stopwatch/timer)
-cookie tray large enough to hold a headlight
-tin foil to cover cookie tray
-large flathead screwdriver or something similar to help pry apart
-soft vinyl or leather gloves so you don't scream like a girl
-high temp spray paint of your color choice
need a tube of silicone/sealant for a little extra seeling if the glue comes apart unevenly.
Take off headlight.
Remove basically everything that's removeable from the headlight. Unscrew all screws.
Preheat oven to 220 degrees. Use a cookie tray or something flat and big enough to hold headlight. Cover that in tin foil so you don't mess up the tray or make it smell like headlights after. pop it in there (do 1 at a time) for about 10-15 minutes DEPENDING on stove. Definitely start off with 10 and see how it goes from there.
Take out. Very carefully bend the little safety tabs allowing two peices to slide apart.
If its super strong and not even moving throw it back into oven for a few minutes.
Its a balancing act. Underdo it and you'll have to rip the 2 parts apart which is bad and can damage them. Overdo and you might start melting the clear part.
When you take it out, WEAR GLOVES. Soft leather or vinyl ones will work. Pry apart SLOWLY. You MAY need to use a flathead to "help" pry them apart. Be very careful cause metal can seriously mess up the plastic, so don't just have at it. Be very patient, HOWEVER if you take more than about 30 seconds to pry apart it will start hardening back up and make it a nightmare. if that happens, pop it in for another 2-5 minutes and get it back up to temp.
After its apart, either scuff up the shiny part with pad or wipe thoroughly with alcohol.
Paint. I used a thin coat of primer, then 2 thin coats of paint. Obviously use at own disgression.
Make sure to let paint dry completely and put back together CAREFULLY cause its super easy to scratch the freshly painted housing when assembling.
Using same process already written up, heat up the 2 parts, and plug them back into each other.
Voila, you're done.
Sometimes the layer of glue is very thin/uneven, so you might need to hit it up with a tube of silicone for that COMPLETE seal. It is optional and use your judgement on whether you need it.
Last step: Look like a baller with nice looking headlights