I just installed a Sony xav-ax1000 in a WK grand Cherokee and it works well except that the volume for the radio is incredibly loud and I will never go beyond 4. I was hoping there is a solution to this. I used a wiring harness that allows the factory amplifier to still be used. Thanks
Lower the gain on the factory amp if you can, might also check and see if your headunit has a loudness setting. If all else fails you may just need to bypass the factory amp.