I couldn't find an EZ-Pass mounting solution for my R1200RT that I liked so I finally worked out my own taking advantage of my GPS mounting bracket. I have written up a pdf document describing the construction and tried to find a way to post it on this forum but the file size including the photos was just too big. To get around this I posted an album with the same title as above. It's a bit awkward to match up the figures with the text this way but I think it gets the idea across. Anyone who would like a copy of the pdf to print out can just reply to this post with their email address and I will email a copy. The BMW GPS bracket is required to duplicate this installation but with suitable modification, the approach may be applicable to other configurations.