Checked the search but no help. My amp remote is hooked up to a toggle switch to turn the amp on. Now with the amp off the factory stereo is fine but turn the amp on and if you change cd tracks or stations there is a long hisssss and then a pop and then the engine hums through the 4 6x9's and the sub(they are the only speakers hooked to the amp). I ran a ground to the neg. battery from the amp, head unit, and amp case. nothing has helped. No speaker wires are close to the power cables. Everything worked perfect last year but now this year wow what a change. The only things added to the boat was neon lights and tower light on a separate circuit. On the opposite side on the boat. What to do next?
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