so i finally got my pac os-4 ive been waiting on and got everything connected to the avh-p4300 and cant get the radio to fit with all the wiring behind it. i read somewhere that i might need to cut behind the radio for all the wiring. as of right now i have the usb, aux, antenna and rcas all connected to the radio along with the pac os-4 and all of its wiring (a lot) packed behind the radio.. i tried to tuck it all behind the ac controls and where the cigarette lighters but i am still having problems. What exactly do i need to cut behind the radio to free up space??