Yes, the CoolStream CarPro for BMW does work with the 2017 Kawasaki Vaquero equipped with the Kawasaki iPod Kit (model K10400-040).
The CarPro works with ALL Kawasaki Motorcycles with this cable!
The CoolStream CarPro works with all models of iPhone and Android. It allows you to stream your music to the Kawasaki speakers via Bluetooth.
Check out this video describing the full set up.
The difference between the CarPro and the Duo when using with a Kawasaki is the following.