Picked up a double din deck today for my MR2. My MR2 has the factory premium stereo system with Toyota's 14/15 pin plug. Does anyone know what wires are for what or where I can buy the adapter male/female plug kit? I went to Futureshop today but the dude there sold me the wrong adaptor kit.....sold me the one for the standard toyota sound system NOT the premium need help? Please and thanks.