OK, so I got an AVIC F500bt, and got all the bypass stuff hooked up.
It plays video from the camera input, but won't play video off the SD slot or USB port.
I've updated the firmware to 2.0, that all seemed to go pretty well.
For videos created on a different camera, and downloaded to the SD card from my laptop, I get audio, but no video. The controls are there on the screen, but it is black otherwise. When I disconnected the parking brake ground wire, the "Caution" screen comes up, then when I re-connect the ground, that screen clears. So it's not a bypass problem.
For vide