one of the dyna riser clamps has the idiot light slot in it, but speedo is obviously on the tank. Use the dyna riser, and mount the speedo the autometer clamp way, you get the best of both worlds. And something different from most.
I did this.
Looks good mate.... and different for sure.
I ended up goin this angle....
http://hdforums.com.au/Default.aspx?tabid=71&forumid=1&postid=342157&view=topic
Still thinking of changing bar clamp for better vision when I hook up the new warning lights.....