Hi, I just bought and received the XTRONS TQ700L universal double din car stereo online with Octa core and Bluetooth 5.0, HDMI, looks great. It is my first time to DIY instal car stereo and I don't like to mess up with it. I can follow the instruction, but there are many cables, do I connect them one by one? Does it matter with the orders or not? Thanks for your instruction.