The fronts are a little difficult... I worked then in and out a few times and the fit in fine. You HAVE to go with the load equilizers to get the same flash rate as the regular bulbs. To compare on side to the other realy can't be done unless you do a complete side with the equilizer. When all said and done it works, I played with them for so long and finally figured out what I was doing wrong, (Nothing) and just hooked them up and they were fine.