The 9005 conversion is a breeze. I just used a pair of pliers to snap off the excess part of the middle tab, and a soldering iron to melt down the runners in the socket part of the bulb. Took no more than like 5 minutes to do both. Just don't forget to take the O ring off the old 9006 bulbs and put it in addition to (and behind) the O ring on the 9005.