update: I did some more digging around, sound is only coming out of the left rear speaker.... I switched the rear speaker wires at the amp and keyed the mic the sound then came from the right rear. switched the wires back and unplugged the RCA plugs 3 and 4 going into the amp coming from the car stereo.....keyed mic and sound buzz is coming from left rear. So if im not mistaken it sounds like the amp is at fault picking up on the frequency and broadcasting it to the left rear speaker. Also the buzz / static is pretty quite on channels 1-7 jump up to the repeater channels and its really loud.