I have some electrical issues which I believe may be due to poor grounds. The issue I had last season was never solved. I can hear feedback in the speakers while trimming the wakeplate as well as switching on the tower lights. The other day I started getting a very loud wine in the speakers and no music. It was terrible. I have 2 amps and I swapped the grounds and the problem followed the ground wire. I followed that wire back to a bus bar near the battery. Found some corrosion on that wire. Trimmed it back and put back on the bus bar. My question is if I should rethink how this ground is done on this boat considering the other issues I’ve had? I have cleaned all wires on this boat. The boat is a 2006 Supra that was outfitted by Earmark Audio by the dealer in Dallas.
In the pic you can see the top wire is a 4 AWG wire that comes from the bus bar in the helm. The 2 4 AWG wires on the side are for the amps. The other 2 8 AWG wires I’m not sure where they go, I suspect one runs the wakeplate. The bottom wire is 2 AWG and runs to the battery. I’m wondering if I should run that top wire from the helm directly to the battery bypassing the buss bar?
Sorry for the long post
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