ok my bro has a legacy amp , yea there crap but it was free, so we hooked it up and everything then once we goto plug in the rca wires the protect light or the red ligght comes on then if we turn the car off then back on and unplug rca wires the green light is back on then once we plug the rca back it goes on again so idk what could be wrong with it plz give me some info on this guys