Just looked at the bulbs youve bought off ebay, and they look the right type!
As to why their blowing fuse's i can only think their faulty?
As for drawing more amp voltage to make the fuse blow, leds draw a fraction of what normal bulbs do, so that's not it!
Did you fit led bulbs in all 4 brake/tail light holders or just the fog light modded ones?
Try swapping the bulbs about a bit, just relpace one at a time, test to see all's well then move on to next and so on, you my find one of the led's to be faulty or that your wireing my be at fault?
Hope this helps.