Like the title says. Amps are under the seats in the middle of the boat. NO metal to be seen other than where the guages are grounded and even at that its only a small piece of flat stock.

it must go to batteries, and use same gauge wire as your + side.

I've been told a few time doing that is incorrect and will fry the amps. Have you done it that way?

No it won't fry amps. Thats the best way to do it. Most performance boats are not built with metal frames like a car, so you have to go back to the battery. The best ground you can get in a car is to go back to the battery, same for a boat.

I did exactly as I was told, I connected a wire to the ground.

I can't go to far from shore but the stereo sounds great...

ground it to the engine that is the best way. also use a larger ground than the power.

Where do you think the batteries are grounded too?

So engine or battery?

You beat me to it!


Thanks guys

i know where the batts are grounded.it is better to ground to the engine than directly to the battery.