So I recently hooked up a camera to the video out line and it works perfect, however now in the navigation screen where you can display 3 different gauges (angular velocity, slope, direction, voltage ect), I can only get few gauges to work.

The ones that work are: direction, side acceleration, voltage.

I thougth I might have loosened a cable when i pulled the HU out, however everything looks secure. I also did a reset on the HU and am still experiencing the same symptoms.

Any suggestions?

The navigation itself is also acting really funny, like not giving me proper directions, and the arrow on the screen that shows the location of my car will not move in the proper direction. For instance it will be pointed down but move to the side instead.

You might have disconnected the wire that's connected to the vehicle speed sensor.