Thanks good link. It did confirm that I got it on right. It still doesn't explain what that tab does. I saw in trhe whiteline rallysport article that the little tab is supposed to lock into the cam and turn with the bolt. Does it do this?
In the kit I have the cam does not extend far enough to catch the cam and "lock" It kinda follows but I wouldn't trust it as a visual aid. There is a little triangle stamped on the front of the bolt that tells you where the polt is pointing.
Also I don't see what it matters which way the large tab is pointing at install. The cam has full rotation and woulkd still go through an entire range of camber whether the washer is there or not. I don't understand why people say that you have to point the washer toward the wheel for positive camber. I can turn the bolt and point it at the moon if i wish. Again maybe the whiteline kit is different, I don't know.
My only thought is that on the box for the bolts there are a list of other cars it will work with. Maybe this is just the way it works on a subaru.