"Chris" wrote in message oups.com...
No the inverter isn't running I'm dockside and this is a new problem as
for years no buzzing with the old system. Even cleaned all the battery
terminals....When I remove the ground I have the buzzing gets worse
when replace its less but still there. I've even tried a larger ga
ground wire still there.


Maybe the new stereo is defective? Seems like you've about ruled
out everything else. Unless, of course, there's a new vessel in a slip
on either side of you that is broadcasting interference. Get a portable
little radio and walk around the dock close to neighboring vessels
and see if you get the buzz.

CN