I was reminded of these by the Wemoto indicator thread.
When I had my off a few years ago I needed an indicator for my K2 Vstrom
I had previously dealt with a company called 'Vehicle Wiring Products' and checked their website.
The indicators at the top of this page
HERE are an exact match for the original K2/K3 ones and even with VAT and P&P added on work out at about £13 each. The only thing I needed to alter was the wiring, as these have bullet connectors and the Vstrom has a two pin plug.