HVAC Blower Motor Relay. 1977 Cadillac Fleetwood Upgrade Kit; | Bosch;. 1978 Cadillac Fleetwood Upgrade Kit; | Bosch;. 1979 Cadillac Fleetwood Upgrade Kit; | Bosch;. IMPORTANT: To confirm that this part fits your vehicle, enter your vehicles Year, Make, Model, Trim and Engine in the Compatibility Table.
