I have an avic n3 installed in my 02 dodge ram 4.7  truck It wont guide me and when I come to a stop it thinks it is spinning in a circle. I have tried a master reset and a reset on the service screen. but the screen still wander and rotates at a stop.

I may have something wires incorrectly. The only way to set the destination is if the parking brake is set and It will not recalculate while driving. I am at a loss did I plug the speedo in the wrong wire . HELP!!!!!!!!!!!