Used air conditioning thermostat switch for any 1967-70 Mercury Cougar or Ford Mustang with integral or factory A/C. Attaches to the side of the fiberglass box under the dash, the wire probe gets inserted into the evaporator. Tested and working switch. These were originally manufactured by Ranco for Ford.
Replaces Ford part number C7ZA-19618-C or C7ZZ-19618-A.