When changing bulbs you shouldn't really need to remove anything major, like the bumper or the battery, just the couple of black panels.? The first time i attempted to change the bulb took about half an hour, but that was at night time with minimal light, it WILL be fiddly if you're doing for the first time.? When taking the spring retainer off i suggest you pay close attention to how it is 'clipped' into place, this will save you some confusion later on.? But once you've understood how it all fits together you'll be able to do it within 5 mins, unless you've got hands like Shaquille O'Neal.?