
I could not resist the temptation of DIYing This retrofitment peocess after watching this wonderful video from you tube.
What are Projector headlights?
These are non reflector types of Headlamps that are based on Prism principle to deliever a sharp beam of light produced from bulb assembly.
They were primarily introduced to cut the cons of HID kits that usualy produce day like lighting but due to limited reflector capabilities gets scattered and produce glare to oncoming traffic.[illegal]
Its like developing a system of lighting to tame the beams.
It can be SINGLE/BIXENON depending on the needs.
Single: uses a PROJECTOR BULB FOR HIGH BEAM,and a reflector as well for the low beam[city use]
BIXENON:utilises a single projector that has a shield[metal piece embedded inside that can be made to adjust automatically] preventing unwanted high beam by default,actually converting the Low beam function.
HIDs are used with them for better illumination minus the scattering beams and glare issues.
These Bixenon projectors were first to be introduced in Germany BMW.
Top notch Auto companies developed LED Projector headlamps as well.
You can see here the throw of light and the brightness from these Projector headlamps.


Note the sharp ''CUTOFF" at the upper brim.
These are what is produced by Bixenon lamps to prevent glare to oncoming traffic and is useful in city traffic.

This is the projector assembly,notice the Front mounted Lens[more the quality=more defined and fine beam of light you will get]

Front of the assembly is surrounded by Shroud+bezels to cover the assembly for cosmetic purposes.
They can also have ANGEL eyes that are used as daytime running lights instead of Parking lights.

Note in the last pic,there is a projector[left] + reflector[right].This is to ensure that when in city,The single beam projector without the cutoff solenoid doesnt glare traffic so a low beam light from the reflector is used for lighting on low beam.
Whereas the Bixenon Lamps dont have reflectors because the cutoff is produced inside the Lens projector assembly for the same to have a low beam function.
Now coming to the DIY stuff.
Step 1.Procure all the necessory material required for the process.
With loads of imagination and money at stake.
This is the Before pic.
Success is not final, failure is not fatal: it is the courage to continue that counts.