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Why is there a separate ground wire on the AT module with the Phillips screw head? Then there is a second black ground wire in the power cord? Can both ground leads go directly to the battery ground, black wire of the Sea Clear wiring harness? Thanks
Direct from the Install manual
"Ground sonar module
You can earth-ground the sonar module using the terminal on the top of the case. This
terminal is DC isolated from power to eliminate the risk of galvanic corrosion."
Thank you Basshopper.
What is considered earth ground on a boat?
You can read about that in the same place as reason for, The Install Manual At2Quote:
Originally Posted by JohnnyGZ21