OEM HVAC CLIMATE TEMPERATURE CONTROL 1998 1999 2000 DODGE RAM 1500 2500 3500Â PN 55056700ac MAKE SURE YOU HAVE THE ALL ELECTRIC SETUP ON THE BACK INSTEAD OF THE MECHANICAL SETUP, WE HAVE BOTH TYPES OF CLIMATE CONTROL UNITS AVAILABLE.(JUST MAKE SURE YOURS LOOKS THE SAME ON THE BACK)