A:
The Onyx Plus with PowerConnect Vehicle kit works best over Aux input but since your CRV doesn't have Aux in then you will want to purchase the optional FMDA25 and have it professionally installed to allow flawless Audio over your FM radio with the FMDA25.
For your Bose radio that has Aux input the Onyx Plus with vehicle kit comes with a 3.5mm (1/8in) stereo cable which should plug directly into the Bose radio.