Got my OEM radio back in. Can’t say what exactly I was expecting with the added RCAs connections, but as you can see the new wires just come out the bottom with some kind of epoxy. Not the cleanest but I suppose it’s all hidden anyways. Bluetooth added as well:
And that connector at the top right… can’t remember if I sent it in all smashed up like that or not, or even what it connects to… it just comes out so I need to check the wiring in the car and see if it actually gets hooked up to something or if I can leave it out.