Well I don't actually own a KIA. I just helped my Sister and Brother in law to both buy 2004 KIA Optimas last thursday. I came here hoping to find some info on wiring in aftermarket alarms, remote start, and keyless entry. Were putting in the audio systems tommorrow and are probably going shopping for the alarms. So it would be helpful if anyone has any info like a wiring diargam. I have a degree in electrical engineering and can pretty much wire anything but it's nice to have some info before stepping into the middle of this stuff.