There is a car I want to buy which has a lot of parts that I want. One issue I am hung up on however is that this car does not have A/C while my car does. I want to swap over its climate cluster ('99-'00) to my '98 car and while my car has air conditioning, the '99-'00 car does not. So my question is, since there is a "blank" where the A/C would be on this car, can I just buy the button and put that in or will I need additional parts like wiring harness etc?