Hi, I'm current trying to figure out three wires on my corolla for hooking up a cd player. I've been to this website http://www.modifiedlife.com/1991-toyota-co...wiring-diagram/ and tried hooking it up according to what they say. This didn't work. So I hooked a wire to the chassis and got to voltometer to find battery. The one I found for the battery is a purple with a blue trace. They don't even list this wire on that site. Now is my car just unique or am I doing something wrong? And yes I've checked which wires are battery/ground/acc on the cd player harness I'm certain on these since I've used the cd player on 3 different cars. Thanks.