What to look for in HID conversion kits
What to look for when purchasing HID products
Technology keeps evolving; HID (High Intensity Discharge) or Xenon has been in the marketplace for a long time now. HID was manufactured utilising DC (direct current) which was very unreliable. A tell-tale sign of this older technology is large ballasts. Over the years HID has been changed to AC (alternating current) enabling the reduction in size of the ballast. In the last 2 years the 55W ballasts have reduced in size and are now half the dimension of the 35W ballast from days gone by.
Older DC types with the large ballasts are often advertised as cheap kits or discounted items. The quality control of the cheap kits is limited; they are built to a price point, if you pay under $50 for a whole kit there maybe reliability issues.
Did you know that the H9 and H11 bulb are the same, they have the same focal point and same base the only difference is the connection plug. As you don't use the connection plug with HID the bulbs are interchangeable.
The 9005 and 9006 bulbs are the same, they have the same focal point and same base the only difference is the connection plug-but they are interchangelable one away only. The 9005 will fit the both the 9005 and 9006 socket in the headlight but the 9006 will not fit the 9005 headlight socket. The thickness of the base on the 9006 where it goes inside the headlight is about 1.5 mm too big to fit the 9005.