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Old 11-29-2017, 06:42 PM
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They would have to be very leaky in terms of the driver. That and a bad non isolated ground. Also shore power with a charger can make them put out noise but again its fixable.
Caps can help but you have to be careful. If you arent running an engine and the caps discharges it will have a tough time replenishing as there is no recharge taking place. No issue on a car because of large alts always on but its the reason they are no seen on a boat.