The following site outlines detail information about Radio Wiring Diagram and Pinouts of Jeep Grand Cherokee 1999 – 2004 model years. Here you will find detail illustration for Radio Connectors of base radio PCI connectors, premium radion with changer C4 and PIC connectors, and Navigation Radio. You will find also Wiring Diagram and Pinouts of base audio system wiring, premium audio system wiring, radio connectors pinouts, CD changer wiring, radio remote control wiring, infinity amplifier pinouts, CD changer pinouts, CD changer adaptor cable, radio adaptor harness, and aftermarket amp power.
Find detail illustration and description of Jeep Grand Cherokee Radio Wiring Diagram and Pinouts here. (source: wjjeeps.com)

Posts
Hello,
I have a 2009 Jeep Grand Cherokee and I am not able to find the remote cable to install a new stereo.
Does any one have the wiring diagram for the original stereo?
January 24, 2009 @ 9:01 am
I was just wondering if u ever found out the wiring for the radio in your jeep. I have a 99 jeep grand cherokee with an infinity amp and i can’t seem to find the positive and negative wires
February 7, 2009 @ 5:32 am
Hello, i am after the pinout for my 96 ford explorer, i am wanting to connect a cd stacker to it, the radio has a cd button. so i am hopin to find out the connections for the cd mainly.
the Radio model is: F57F-19B165-GG
Thankyou,
John
June 26, 2009 @ 6:26 pm