On my rearview mirror there are 3 buttons, a middle power one to turn on the square telling me direction and temp, and 2 buttons on the left and right of it with lightblubs, what do those do, i push em on and off but see nothing....IN Addition where do i plug in my ipod connector thing, cuz i tried both slots, and both didn't work, is it an electrical problem and if so how much would it run me up to fix