hi, guys, I bought a RB4 unit to put in my doge intrepid 02. i notice that when i put the destination , u hear the voice command but nothing. stays without doing nothing.the GPS works because u see that is grabbing sats. but at the time to put the destination it doesn to anything. is there a way to reset the sys? also i notice that whenever the car is on and when i put the head lights the night lights doesnt work in the radio but when the car is not the lights works. do I need a sensor? what kind?