Many vehicles use an H10 or 9140 or 9145 light bulb in the fog lights, but these bulbs are almost identical to the 9005 bulbs.
The 9005 light bulb is 10x more popular than the H10/9145 or 9140 variant, so we normally sell the 9005 HID bulb for conversion kits. There is a small modification to make on the 9005 HID bulb to fit into a housing designed to take H10/9145/9140, and sometimes you don't need to do anything!
Read this PDF to find out how to do this modification and install