I bought the kit from JackB who made the attachment bracket, soldered correct wire lengths, connectors and wiring instructions along with the LED strips (2) You could easily do this yourself. I found it easier to buy everything in one place from an actual Valkyrie owner who has done it and taken the time to put the kits together. You could PM him or follow his post on the F6C forum.
His was made for his bike with the Corbin seat utilizing the rear bolt mounting points for the bracket. I have the stock seat and the bracket would not work without slight modification. I now prefer the location I chose as it is higher and I believe more visible, as Jess pointed out.
Thanks I'll try to track him down. I'm an electrical dunce.