the fairings and painted parts on both bikes are ABS,and not conducive to the HDPE glue... but the "soft/black plastic" parts, like the C14 lowers, front trim, and inner fender, and also the C10 bags and rear fender, are HDPE.
the stuff I posted was mainly for bag repairs on C10's, but if the HDPE parts on either are damaged, I'm sure this should work... but watch the video, and follow the mfg's directions.