Cant switch modes !
 

I have a 1997 Base Model 850 Sedan. When I first got it, it was very difficult to change between defrost and other settings. I would always fight with it, but the rod that sticks out ended up breaking. I cannot switch off defrost now, so if anyone knows anything about this please help. Also, if my car didn't come with electronic climate control, but can I replace the original with ecc? Thanks