I bought a used car last night and the previous owner had installed a pioneer dmh-1500nex stereo system. It might as wel https://19216811.cam/ l be alien technology to me. I actually managed to get my phone Bluetoothed to it last night, but I can’t seem to get the back up camera to work. How do I even know if it’s connected? If it’s not, what do I need to fix it? Also, lots of the menu o https://1921681001.id/ ptions are grayed out, even with the car in park. I tried doing a factory reset, but nothing changed. I’m not sure what to do.