get a wire tester and tern the car of and tutch it to each wire untill u the light comes on and that will be ur consent live wire. to find u switched wire tern the car switch on and tutch it to each wire untill it lites up and that will be ur switched wire and the ground should be the black wire. to find the speacker wires ul have to pull out each speacker to find out the wires for it. Good luck
You need a wiring harness. Plain and simple. Don't listen to this guy who can't even spell touch.