I bought the car with an Android head unit already installed. It has the factory 18-speaker system, but it looks like the previous installer bypassed the amplifier. I’ve ordered the MOST system from AliExpress and am eagerly waiting for it to arrive, hoping it will allow the speakers to work properly again. In the meantime, I’m trying to figure out how to get the roof monitor working. I’ve seen some mentions of pins 1 and 2, but I’m not sure exactly where they are, what they connect to, or what needs to be done overall. If anyone can shed some light on this or point me in the right direction, I’d really appreciate it. Thanks in advance for any help.