http://www.kiatechinfo.com

sign up...free
go to shop manual
enter car details..
then..>body electrical system..>Audio..>repair procedures.

then it will tell you how to do it.

i have a normal one in mine. previous owner replaced it
with a manual one. still works fine. doesnt go up and
down on its own.

97 sportage, mostly stock apart from king springs front and rear, monroe shocks, k&n filter, pioneer mp3 cd, rampage 2x 10"subs and rampage amp.