Hi Richnorm, I know this post is ancient and it is so super helpful. I was just wondering if you could help me out with one thing.
I'm about to do my 2010 legacy and the process seems exactly the same as yours. But I am having a lot of problems figuring out exactly which brake switch to get. Also, the brake switch you got is the one I can find online, but I also only have a 2pin plug (male) that goes into it. Any chance you know which 4pin male plug I need to buy?
This is what I found online but no luck finding the plug that goes into this one: https://partsouq.com/en/search/search?q=83370AA001