Re: Infinity gold amp specs
It is not. You can wire the harness adapter directly to the speaker level outs on the amp and plug it into the factory harness. I did this with the Alpine I have in my 2004.
Here are more details on the factory system if you are interested:Jeep Grand Cherokee WJ - Factory audio systems
2004 Columbia Edition WJ 4.7 HO
RB4/Moog HD Steering Stabilizer/PML trans pan 10304/OME 10MM Spacers/Bilstein shocks/Rubicon Moabs/255/65r17 Cooper Discoverer AT3/Factory chrome tow hooks/Mopar hitch & a loose nut behind the wheel