I know that your post was a long time ago, but for the others that may come across this I thought that I'd add my 2 cents.
In the service manual (mine is #99483-06 Touring Models), you can see the fairing brackets on pages 8-134 and 8-135. Also on other pages that are about the radio, speakers, and interconnect harness. I'm also dealing with the problem with these brackets being broken, as was a friend of mine with the 06 FLHX. Looking at the pics that show the backside of the speedo and the tach, to the left and the right you will see a bolt screwed through a half moon shaped piece. This bracket also supports the stereo. That is the end that is commonly broken on these long and odd shaped brackets.
Being a welder, fabricator, and Mechanical Tech, I'm going to test a fix to the failed design. When that bracket is being formed it's bent into an "L" shape like a piece of angle iron to add support to the odd profile of the part. Then the half moon end is bent 90 degrees to form the mounting tab on the top end of the bracket. The lower edge of the tab should have been welded to the main body of the bracket to better support that tab. After the vibration fatigues the metal enough to brake it has been comprimised and just welding isn't going to last. It should also be braced with a gusset. I'm ready to install one fixed bracket and then fix the other side. I'll add a pic soon to show how I've boxed the end for support. With luck it'll solve the issue.
