yeh it shouldnt of :S dont know why it did that but i put a biger fuse in mine for extra protection as its drawing more power i have 15amp or 10amp but it dont matter and it dont affect the brightness of the lights.
No :S I don't understand it did but not bothered, bought a pack of 10 for 99p off ebay yeah that's a good idea. I would of bought 10amp's had I thought of that, but least I have lots of spares now