Bought and fitted one of these to my Vulcan 500. I know the GZ has a press cancellation on the switch, but this is a good cancellation reminder, and could be a lifesaver. Very easy to fit, works well in town, but difficult to hear above 50mph. Another benefit is warning other road users that you are about to make a turn. Very cheap, works well and they will ship abroad.
I have no affiliation or connection to the seller.
http://www.ebay.co.uk/itm/2508806491...84.m1497.l2649