Tried everything. 2011 RG. Changed out the head unit for a Sony. Added Biketronics unit, RF amp and running 6 speakers. 4 in the fairing and 2 in the lowers. Unit functions fine but when I power off the ignition, whether head unit is on or not, I get a few seconds of static through the speakers and then the usual Sony 'chime'. Have triple cked my ground. Any ideas? Thanks.