ive found various bits on this but nothing that actually answers my questions. my 2010 100hp has Bluetooth and subwoofer beneath drivers seat both which will be connected to the stereo rear. i want to add an aux input but not sure if its possible as pressing cd twice doesnt bring up an aux option and im thinking the plugs on the rear will already be full with the sub and Bluetooth. anyone know how to add aux in this situation. seems crazy that the Bluetooth wont stream music