Check along the Delkanda strip, they will have what you're looking for. And if you're just replacing it, it's a simple DIY job if you don't mind getting your hands dirty and like fiddling with your car (like 99.9% of the members here do). If you're fitting from new, you'll have to figure out switches and relays and stuff (the car will probably have provisions for fogs in the wiring harness already).
I only speak from experience with my Vios but I'm sure its very much the same procedure with any car.