Well - Problem Solved (I think) Called Freightliner for the second time... got a different tech guy... he said just forward of the rear axle, drivers side, on the frame rail is an air manifold.. it has a pressure switch out of each end.. the one with the spade connectors is the parking brake light, the one with the 3" pigtail and connector is the parking brake chime switch... he said that switch is going/went bad... replace it and problem should be solved... for right now, I just disconnected the pigtail connector... hopefully, that will work til I get a switch. Thank you everyone for the hints, tips and ideas!!!!