All car in-unit receivers wll require the same standard wiring as all decks, which is fairly simple to install.
Wiring diagram for instalation
Yes, a CD player can be installed in any car with the proper wiring.
Ask your self what is the need for electrical transmission. You body requires the same sort of 'wiring' as does your house and car.
The higher output and wattage wiring works the best for any sort of subwoofer setup.
No, there not a way to fix the car CD player. Without the proper wiring harness, all of the electrical components in the radio are damaged. When installing the next unit, ensure that you have the proper wiring harness.
That there is some sort of error.
The switch will depend on the alternators and car wiring. The switch could require removing an external regulator as well. You will need a wiring diagram of the vehicle wiring to decide which wires to change.
It's very easy to install car DVD players for yourself, as long as you have a working knowledge of car wiring.
New Mexico does require that its drivers have car insurance. The minimum car insurance required is at least liability.
Buy the Metra wiring harness adapter for your year Kia. Plug in the adapter to the factory wiring harness. Use crimp connectors, solder, heat shrink, etc to connect the wires from the car CD player to the adapter. Make sure no bare copper wires are exposed. Simply match up the wire colors with the CD player and adapter. Save your factory radio. You can quicky unplug the aftermarket harness and CD player and plug your factory radio back in when you sell the car. DO NOT CUT THE FACTORY WIRING. The factory wiring color codes are vehicle specific. If you cut the wiring already then take the car to a professional car audio shop and pay for your mistake to be repaired properly. For more in-depth car audio needs and questions visit the Sound Domain forums (google it)
There is no buyer's remorse law in Virginia. You cannot return a new car unless the dealer will allow you to. They will usually require a fee of some sort to restock the car.
Copper is almost always used in car wiring.