Stock speakers and wiring
I'm putting aftermarket speakers in my car, but the stock speakers/wires in my car do not have positive/negative labels, therefore I don't know which wire the wires from my aftermarket speaker should hook up to. I've tried using a process of elimination, but for some reason neither sounds right. I know it's just my ears playing tricks on me because I don't know if either one is correct for sure. Now I know there is a way to hook the wires up to a 9 volt battery or something to determine if its positive or negative, but I dont know how. Anyone know the process?