installed new kenwood kacm-3004 amp and set of kicker ks65 6.5 in my road glide special and had radio flashed and sounds great , but go some static when the volume is off and when I first power the radio up it makes a pop noise and then does the pop noise agin like when Bluetooth connects , ive tried turning gains all way down and setting frequency at diff settings , but no luck , anybody got any ideas .......thanks