My 2002 Dakota 4x4 4.7 Quadcab seatbelt warning light shuts off when it is suppose to but the charm goes off when the truck rolls forward or backward. Suggestions?

 

I have a 2002 Dakota 4x4 quadcab 4.7L 250K+ Manuel Trans. The seatbelt warning light turns off when it is suppose to but the seatbelt charm comes on when the truck moves in either direction and turns off when the truck comes to a full stop. Ideas??