Here’s what I did on on '08 SERK... which should be the same...
Windshield Bag part # -- 56629-00A -- Note that this was in the ’08 parts book but not the ’09 (haven't checked '10) so it may not be available any longer. Chicago Harley & Surdyke still list them but you'll need to check. Here's a link that shows a picture of the bag:
http://www.surdyke.com/hd/product.asp?prod=84291&cat=377I had to replace the bolts and nuts for the two outside mounting holes because at the outside the stock bolts weren’t long enough to get through the shield, plates and bag. Finding the right ones -- i.e. matching bolt head pattern, just longer, was the tougest part of this whole deal.

I can’t find all of my receipts on this but I do have the part numbers below written down (I don’t remember if these were the final ones I bought or just some that I tried and couldn’t get to work).

Screw, button head 5/16-18 – part # 94388-92T
Acorn nut – part # 94006-90T
For the process (and for what it’s worth), what I had to do was:
• Take out all 5 of the bolts across the middle portion of the shield
• Mount the bag using the bolt for the center of the shield – the bag comes with a “mount hole” included – you only need the bolt for the center
• With the bag still mounted using the center bolt, I drilled holes through the back of the bag using the shield bracket holes as guides
• Mount the bolts and Voila!!!
