Hi,
The Sequoia uses an H11 bulb for the low beam meaning that you would need to get an H11 HID conversion kit. I'm not sure if you have seen our thread but we currently extending Toyotanation.com members a discounted price:
XenonDepot Spring Fever SUPER Sale!
Our Xtreme HID conversion kits use Japanese bulbs and ballasts to ensure the quality and durability of our product. The kits will come with a proper relay harness to ensure you do not draw a higher current from your vehicle's OEM headlight harness than it was designed to provide.
The ballasts are epoxy sealed to ensure that they are water tight.
If you have any questions please feel free to email me at
info@xenondepot.com or send me a PM.
Regards,
Steve