The flush mount turn signals rank right up there with the timing advancer and the turn signal eliminator as almost useless devices. There are some good ones available, but nearly everyone buys those cheep little ones that can't be seen, look like crap, and stick on (sort of) with two sided tape. They seldom fit properly and do nothing but lower the value of the bike. Then as if to make matters worse, they are usually wired badly as well, often by just twisting the leads together or permanently soldering them so the fairings can't be fully removed. I just can't understand why so many guys aren't happy unless they convert they bikes into a pile of junk.