Just as easy as the instructions sound!
Just did this DIY project today on my 335i. The instructions are perfect, even years later and on newer 3 series.
Only change I suggest has already been mentioned... I would NOT match the gauge of the V1 hardwire kit if you plan to piggyback as instructed. Use 18 or 20 gauge and it will be easier to piggyback. If you are going to use the V1 provided tap, this won't matter.
After reading all kinds of crazy methods of removing that console on other threads, these were so easy. I have big fat fingers, and even I was able to get to the clips with no tools and quickly release the console.
Thanks so much to all for these posts and comments. Gave me the courage to do this myself and save some $$ paying for hardwiring.