[zpaul]

Originally Posted by wileetundra

In order to enable the rear camera input while driving you have to feed the NAV a signal which tells it the vehicle is moving in reverse direction. The mapping software thus tries to show you backing up but it gets a little confused when you drive at the higher speeds because the gps signals do not match the dead reckoning it is trying to calculate based on your speed pulse and reported direction of travel. So I found that the map scrolls very poorly when I enable the rear camera feed while driving forward, but the map does update often enough for me to see where I am at, and usually on highway trips I am not turning often anyway. The bottom line is that when you watch a movie you shouldn't plan on using the map, and vice versa, but with my toggle switch panel I can flip it back into the factory mode briefly to update the map and get directions if needed, then flip back to the movie. I hope to make this a moot issue by enabling the second video input but I am not done with that project yet, and I really don't need it since the existing setup works very well for me.

Thank you for the explanation. I actually found out that I need to start the route again if I missed the turn.