Hi folks .. Since 2 ( or more I'm not sure ) years I have only 2 speed for my AC blower .. 3 -4 no 1 -2 funtion ( AC start but the blower not ) I'm pretty sure is quite simple ( as in my old Celica ) are one box that control the blower speeds .. The issue is, I don't know where is this box, relay or wahtewver that do this funcion .. It's my intention try to solve this with my Tencha in the body shop. any help .. ?