Ok, so here are the parts I already have:
Headunit
Screen
Controller
From research, it looks like i need:
Video Cable
https://www.fcpeuro.com/products/bmw...SABEgKMyvD_BwE
Usb Port for Glovebox
https://www.ecstuning.com/b-genuine-...t/84109237656/
USB Cable
https://www.ecstuning.com/b-genuine-...e/61129255716/
Here is the part where I am having some trouble. Some people are saying you need an emulator (
https://www.ebay.com/itm/271677886583) and some people are saying it's plug and play and you can code around it. i have 0 idea about the coding part so I really don't know which way to go from here. Any input would be greatly appreciated! If there is anything else I'm forgetting or anything unnecessary please let me know!