I know this isn't a boat, but this is where all you audio experts hang out. My son just picked up a 3-cylinder Daihatsu mini-truck and he wants to add a decent system to it with a sub. It's a 12-volt system, but I was thinking that anything that's pulling that kind of power will not work on something this small. That being said, people do it with golf carts and side-by-sides, so why not?
He's got space behind the seats for an amp/sub. It's got a regular dash that he can put a head unit in, but he probably only needs something that will take an auxiliary input. Any suggestions??