Question for anyone that installed a backup camera on this unit:
I ordered an OEM replica pop-up camera from aliexpress. The RCA cable that plugs in behind the head unit has a short red wire coming out of it. The broken english install guide says that it connects to the HU reverse signal cable. However, there is already a different cable that I connected to the reverse light power cable which I assume signals the camera to turn on. So what would I connect this red wire to?
edit: from what I've been able to find out, it seems like it won't be needed. I think it's used to trigger an aftermarket HU to switch to the reverse camera view. Ours do this automatically as long as it's enabled with vagcom.