I got this from a friend who had it hard wired in his car. The only thing is he doesn't remember what the colors of the wires do.. theres 4 of them. They are black, red, yellow, and white. I want to connect them to my car using a direct connection, so how would i go about doing this. There is the phone line clip at the top, and the order of those wires are red, yellow, white, black.. if the clip part is down and the connection side is up. thanks for any help