rear camera kit:
i think there is a lot of camera kits very cheap in internet,
since i have installed a China Idrive, so i can have a monitor, if you dont have a monitor, you need to buy it as well. very simple DIY below is choices:
http://s.taobao.com/search?q=%E5%AF%...urceId=tb.item
but problem is that you need to connect it into parking light, usually there is interference which u need to buy resistor, or just like me, i simply connect to 12V cigarette plug...many small issues you need to think.