the mirror glass? It's easy and no the stuff doesn't usually break. Although trying to put it back in..it's going to feel like you might break it.
Honestly I didn't have a lot of experience with stuff a few years ago. But if you can work with your hands and cut or dremel things a bit. You should be able to do this.
On the wiring, we'll need to find out where your directional wiring is located. In my regal I was able to find it right at the body control module by the drivers door under the dash. To run wiring, you pull the door panel and sneak it through the boot on the door just like GM did. Takes a little thinking at times, but it's all possible.
There's really nothing in that write up that takes special skills that I don't think the average breathing person can't handle. Maybe a tool or two to buy, but easy enough.
