Only with considerable difficulty. You're probably better off to trade your car in for one with AC.
around 1200.00
get a better car
It is usually required for the warranty to be valid.
I would search the local auto wrecking yards for a 2004 Neon that has factory air then strip all the necessary parts from the donor car to make yours an ac car.
you can install a/c on anything. if vehicle did not come with it you are better getting under dash unit , rather than trying to route hoses and ducting thru dash
Vehicles do not come with a digital car gauge. You have the option to install a gauge in your car at the time purchase.
Sure you can. If you use a stock unit you will have to cut the firewall. The easiest way to do it would be to buy a vintage air system. They are actually easier to install on a non A/C car than the stock system is.
The AC takes the moisture out of the cabin air and that helps clear the inside of the windshield from moisture faster.
All car alarms in market come with wiring diagram and installation instructions. If you have some mechanical aptitude and if you have necessary tools then you can easily install car alarm yourself.
Components can be located to install a factory correct ac unit but it may take a lot of searching and expense. Another option may be to buy a 79 beetle with ac and use it as a donor car for the parts.
The 2001 Mercury Sable does come with a CD player. If the car does not have a CD player in it, an install kit can be purchased to install a CD player.
Its just part of the cars computer, it just keeps it cool. Most cars cooling fans come on when the car is started If the AC is on it will.