I've had the Hyperlites since my bike was new in 1999. Saw another Valkyrie with them at a VOAi ride-in in Montrose, CO and they really grabbed my attention as I was following him. Good customer service after the sale too when I had a few LEDs burn out, he sent a free replacement no questions asked...just that I return the defective ones so they can do some testing to find out why they might have failed.
http://hyperlites.com/I have the U32 modulating kit...
http://hyperlites.com/moddf.htmlI mounted mine on the license plate bracket in place of the stock red reflectors....already had holes to run the wiring where the reflector stems ran through the bracket.
Good luck...can't have too much lighting on the back of your bike!!