Hi! I just recently purchased a 2000 Saab 9-3 Turbo. I have purchased the stereo and the plastic piece that helps fit the stereo into such a large hole, but after that I am lost. I need to know if I need a wire harness, or if I can just connect the wires directly. Someone said go to best buy and purchase a harness for a VW? I have limited knowledge of cars however would like to learn more. Thank you for your help! A step by step guide would be really appreciated.