questions on replacing stereo in JGC 98 limited

Hey, i'm new to these forums and i am trying to upgrade my current stereo...is there anything important i need to know so i dont mess anything up? thanks

muteOPINIONS

Here is a link with everything you need, glad I could be of help to you. Later.
http://www.installdr.com/InstallDocs/Jeep/PDF/533013.pdf