need 04 grand cherokee radio wiring info

i just bought a 04 grand cherokee and the radio info is not in the wiring diagrams any help would be great also if i replace the factory hu will i lose the function of the factory amp ? ty

+12V DC Battery(Constant)	RED / white	Also powers amplifier	5	25 amp	J/B behind left side of dash
Switched Accessory	WHITE/ red	Pin 2	30	10 amp	J/B behind left side of dash
Ground	Black	Pins 11 & 22
Power Antenna	BROWN / white	Changes to BLACK/ white
Remote Turn On(output)	BROWN / white	Pin 13
Illumination	Orange	Pin 3
Steering Wheel Control Wire	RED / yellow & RED / black
Left Front +	Dk.GREEN/ orange	Pin 10 Line level output
Left Front -	BROWN / red	Pin 9 Line level output
Right Front +	Violet	Pin 7 Line level output
Right Front -	Dk.blue/pink	Pin 8 Line level output
Left Rear +	WHITE/ dk.green	Pin 18 Line level output
Left Rear -	Dk.GREEN / WHITE	Pin 19 Line level output
Right Rear +	Dk.blue/white	Pin 21 Line level output
Right Rear -	Dk.blue/orange	Pin 20 Line level output

AMPLIFIER OUTPUTS

Wire Function	Color	Note	Fuse #	Size	Location
12V DC Battery	RED / white	Pins 2 & 10	5	25 amp	J/B behind left side of dash
Remote Turn On (input)	BROWN / white	Pin 13
Left Front Mid +	Lt.GREEN/ red	Pin 8
Left Front Mid -	Lt.GREEN/ dk.green	Pin 3
Left Front Tweeter +	Yellow/red	Pin 4
Left Front Tweeter -	Yellow/black	Pin 11
Right Front Mid +	Lt.blue/red	Pin 10
Right Front Mid -	Lt.blue/black	Pin 9
Right Front Tweeter +	ORANGE / red	Pin 12
Right Front Tweeter -	ORANGE / grey	Pin 5
Left Rear Mid +	Dk.GREEN / WHITE	Pin 6
Left Rear Mid -	WHITE/ dk.green	Pin 7
Right Rear Mid +	WHITE/ violet	Pin 1
Right Rear Mid -	Tan/dk.green	Pin 2

AT SPEAKERS

Wire Function	Color	Note
Right Front Tweeter -	ORANGE / black
Left Rear Mid +	Tan/dk.green
Left Rear Mid -	WHITE/ violet

Available Notes

Notes

The amplifier is located under passenger side rear seat cushion.

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wow fas reply thanks for the info