That seems to be the preferred solution, just pick a place where the heat won't bother anything.
As danbefree mentioned in the prev. post http://www.focusfanatics.com/forum/7979314-post14.html
there are options to change the car's system to recognize the HID's instead of needing to trick it with resistors and use the same power as the prev. lights did PLUS that for the new ones.