A:AnswerNot likely. You will need to remove your existing in-dash CD player to install the Pioneer NEX. The Pioneer has several input options including an aux input that may be connected to a CD player externally. If your CD player can output sound on an "aux" line it might work assuming you have a way to power on the CD player (batteries).
A:AnswerYour best bet is to get a wire harness specifically designed for your car that is compatible with the Pioneer NEX. You may have to call Pioneer's customer support to be sure. The Pioneer has a receptacle for camera input but I don't believe that is what you are asking for. It sounds like you want the camera views you get with your vehicle to show up on the Pioneer NEX. That definitely requires an adapter harness specific for your vehicle but I would still call Pioneer customer service before you spend the money.
A:AnswerI believe GAIA GPS are meant to pair with another device like a phone or tablet. The phone is connected to the Pioneer NEX by USB for the Andoid/Apple carplay. The Pioneer then has access to the apps on your phone. The Pioneer itself does not have any apps installed. If you have the GAIA working on your phone then simply connect the phone to the Pioneer via the USB and you should have the functionality. Hope this helps.
A:AnswerThe Pioneer NEX is a double-din sized receiver. If your corolla has a double-din sized head unit then it will fit as long as you buy the correct adapter kit. The adapter kit is essential for maintaining a clean look while providing mounting hardware to install the unit. Search for an adapter kit for you corrola to find out if the Pioneer NEX will mate to it.
A:AnswerThe back up camera is an optional ADD ON that has to be purchased and installed at the same time. You do not have to do anything to have it work once it is installed.
