Pingel makes one for the ZX14. Give them a call. Even if they don't make one for the C14, I would imagine it would be pretty easy to adapt the bracket for the C14. There are a pair of body bolts very close to the shifter that should work.
http://www.pingelonline.com/electric-shifter-kits/77102-electric-speed-shifter-kit-kawasaki-zx14-2006-2013.asp