I found this post in Delphi forums Electra Glide Garage. Many folks here in So Cal have installed a Kenwood model KDC-719 CD Stereo and they are using the steering wheel control input to connect to the standard HD handlebar controls for volume and station changing. The steering wheel control is an optional device that plugs into the radio and the switches on the HD handle bar provide the same up/down function as the optional control unit. There is also a marine cover available that will do a good job sealing the faceplate. There are other, more expensive models, but this seems to be the one folks are grabbing up