I am a newbie on this forum. Hope my problem/solution will benefit others. I have a Pioneer AVH-P6400CD in my RV that is my radio, CD Player, Backup monitor. It works but needs repair on flip-up monitor. I can't find anybody that still works on this unit. So looking for a replacement such as possibly the Pioneer AVH-P6300. Anyone have any experience with the P6400/P6300 changeout. My questions are: do they use the same installation sleeve, are the plugs the same, will the P6300 accept my backup camera plug and CD changer plug. Any help any of you experts can give on this subject will be greately appreciated. Thanks, Jim.