This is the pressure switch in the back of the air conditioning compressor. If the pressure in the system drops too low this switch cuts off the compressor to avoid it burning out. 1987-1991...

This is the suction hose between the air conditioning compressor and the expansion valve. 1981-1998 Sliver Spirit, Sliver Spur, Mulsanne, Turbo R  (From Vin 20001 to 24496)  

This is a new thermal expansion valve for the air condition. Supersession from (CD6307) 1983-1986 Silver Spur, Silver Spirit, Mulsanne, Turbo (VIN 8862-17000)