I got this idea from a few guys in the How To Under 50 bucks thread.
You already have one of these on your bike. Your turn signal on one side uses it. I went to the dealer to get another and the parts guy went in the back and found one in the service department and gave it to me. If you can't get a freebie, I think they cost about $11.
Remove the lower (or upper, whichever you prefer) pinch bolts on your triple trees. You will have to drill out the signal mount hole just a hair to get the bolt through. Put the mount on and tighten the bolt back up, and mount your sigs. Very easy.
Once you put the signals on, you don't even really see the mount. This puts the signals nice and tight up against the forks. I like it better than any of the kits I have seen...Plus it was FREE!