Hi Everyone, this is my first post so please bear with me. I have a 2007 Mazda 5 1.8 TS2. I have decided to replace the radio system to a non Mazda unit. Everywhere I go to get a harness kit I am asked if it is a BOSE or non BOSE unit. How do I tell the difference? I have taken the old unit out and all it says is Sanyo and it does have steering wheel controls. Can anyone please help me!!