It really is very easy to replace the audio unit. The trim pieces pull off, there is one screw under the ash try that must be removed prior to pulling off the trim piece (be careful not to damage the trim by prying are pulling to hard) Mine just pulled off with not much force. Once the trim piece is off everything else is held on by screws and the electrical connectors just snap off. Most of the connectors are color coded. If in doubt mark the connectors with tape prior to disconnecting. The audio unit is very visible and accessible after the trim is removed. 4 – Screws hold it in place. Once the screws are removed the unit will slide out. There are many double DIN replacement units that will fill the opening without having to use an adapter kit. I replaced my unit with a DVD/GPS unit and it was a perfect fit. If you are replacing your unit with an after market unit, make sure that you get a Kia radio adapter connector. It’ll save you a lot of time and eliminate splicing a lot of wires. Go to the Kia website link to see a diagram.
http://www.kiatechinfo.com/viewer/de...asp?group=shop