Hi there, anyone out there got one of these motorhomes with possibly same two button alarm fob installed. 2002 facelift 244 code with grill. Alarm seems to be dead. Engine battery and fob ok. Inhouse batteries on overhead leky panels showing 13.1v. Had to unlock doors with key, no alarm went off. So where does alarm get its sourse of power. Possibly backup battery as well. Anyone ideas..???