I was scaveneging the junkyard yesterday and I saw a grand prix it was a 98 just like mine and had the digital heater controls, and the digital info ceter as well, are those things plug and play? will they work in a car that did not have the digital? if they wont what do you need for them to work? thanks! is there a write up about this? I tryed searching but it brought up nothing?? thanks!