Our 2006 Carver has factory Clarion CMD4 stereo head unit. In today's environment, streaming via Blue Tooth is the norm. So, the wife helped me install a Fusion MS-BT-100 Blue tooth adapter to the AUX inputs on on our Clarion CMD4 head unit, which also has Sirius Satellite connections as well (but we won't pay for a subscription). The install was easy, after accessing inside the cabinet to get to "backside" of Head unit. Connect Red & White Aux RCA jacks, then cut and crimp red wire connection to unit red wire switched power and cut crimp black wire to unit black wire ground. I placed the "puck" as high in the cabinet as i could, and tie wrapped it in place, then powered on and streamed from y phone, both in the salon cabin and also at the helm. I think it's a great $45 upgrade and would recommend to anyone wishing they could or had BT feature, to consider.