Used OEM Ford heater blower motor resistor that attaches to the heater blower fiberglass housing. The reproduction resistor that fits the 1967 - 1968 Cougar and 1965-1968 Mustang has a different hole pattern. According to manufacturer information (INDAK), the OHM output for this switch makes it incompatible with the earlier reproduction resistor. We inspect these for damage or broken wires and we guarantee these will make your fan work. Not only was this heat resistor was factory installed on Cougars and
Mustangs, but also on 1968 and newer Fairlanes, Torinos, Rancheros, Cyclones, and
Montegos. Also installed on 1970 and newer Mavericks / Comets, plus 1971 and newer Lincolns.
Ford part # C8OZ-18591-A.