1975-76 Ford Torino, Cougar, Elite, T-Bird Manual A/C-Heater Wiring Diagram

This is a scanned page (section 36-45-9) from a Ford factory service manual showing 'FIG. 7 Manual A/C-Heater Electrical System Wiring Diagram' for the Montego, Cougar, Torino, Elite and Thunderbird heater-A/C system. The schematic traces circuits from the battery through a 20 amp circuit breaker and ignition switch to the blower motor, blower resistor assembly, blower switch (with HIGH, MED (HI), MEDIUM (LO), and LOW (BAT) positions), A/C clutch assembly, ambient cut-off switch, and clutch/switch connections at the dash panel. Wire color codes are labeled throughout, including black, black with light green dot, light green with white hash mark, red-orange hash mark, light green with purple hash mark, black-yellow hash mark, and yellow with red dot. Model-specific wire colors are noted: brown with yellow stripe on Thunderbird versus orange stripe on Cougar, Torino, Elite and Montego. Insets at the bottom detail pinouts for the 1975 blower motor switch connector and the 1976 A/C control switch connector (labeled '1976 CONNECTORS'), with the main diagram noted as '1975 SHOWN'. Diagram reference number L1644-D appears at lower right. A reader can identify wire colors, connector pin assignments, and component interconnections for troubleshooting the manual A/C-heater electrical system on these mid-1970s Ford/Mercury vehicles.