installed the video interface today. I hooked it up to a mirrorbox to mirror my phone screen in the car.
When I switch to AV1 (all other AV inputs disabled by the dipswitches) the screen goes black. Switching back the OEM screen shows. Both LED's on the interface light up indicating there is video signal being received. All cables checked and reconnected. Connected the mirrorbox to the TV inside the house to verify the mirrorbox worked. Connected another video source to the interface to see if that made a difference, swapped from AV1 to AV2, played with various dipswitch combinations, put the video input from the mirrorbox in the rear camera input. Everything has the same result, a black screen. The only thing I can think of now is that the interface is NTSC only and everthing I have connected is PAL. Could that be the cause?