My friend just got a new car from one of his friends. His friend was running over 1000 watts in this car before he sold it. The buyer (my friend) wants to put a system in it...but only run around 300 watts. I havent seen the wire myself so im not sure what size...he said its pretty big so im guessing either 2 or 4 gauge. I don't think there would be a problem running a wire that is too big. But i figured I would ask on here just to be sure. So he is planning on running 300 watts through either 2 or 4 gauge wire. Is this ok?