:nerd:
There's several ways I've read about. Cheapest was a guy who popped off the mirror cover plate on the left hand control box (you know they're on both sides and covered by a blanking plug? I didn't). He then bought one of those cheap screw in holders made for any bike (here...not the same one but you get idea...http://www.ebay.com/itm/Universal-Motorcycle-Handlebar-Mirror-Mount-Phone-Holder-/201554487695?hash=item2eed95698f:g:BAgAAOSwbwlXASMY)
I think he had an iPhone 6 and just turned it sideways for the gps...It's $9.95 USD and I'm sure the M8 or M10 bolt can't be more than another $1 USD or so..
Duh...just noticed on the Fleabay auction picture they've just stuffed it under the mirror mount on the fairing....you could mount it there too..
Cheers
Jay