A bit pricey - but check out
http://www.turnswitch.com/
I got their unit with the column mounted switch, but they offer a toggle switch that could be mounted almost anywhere.
Several other features including 4-way operation; auto cancel; duplexing lights to be brake and turn; a low volume 'clicker'; electronic (no mechanical flasher); 6 volt or 12 volt, pos or neg ground; more...
I have no affiliation with the company, just like the product.