Heater circuit for Ford Ranger I (1998-2006)

BATTERY JUNCTION BOX (BJB) (AT LEFT REAR SIDE OF ENGINE COMPARTMENT) BLEND DOOR ACTUATOR (BEHIND RIGHT SIDE OF DASH) BLK WIRE BLOWER MOTOR RELAY BLOWER MOTOR SWITCH BRN WIRE FRONT FUNCTION SELECTOR SWITCH ASSEMBLY FUSE 13 FUSE 27 GRY WIRE GRY/YEL WIRE HEATER BLOWER MOTOR (RIGHT REAR OF ENGINE COMPARTMENT, ON FIREWALL) HOT AT ALL TIMES HOT IN RUN ILLUMINATION LOW HIGH LT BLU WIRE LT GRN WIRE MEDIUM HIGH MEDIUM LOW MICROPROCESSOR MODE SWITCH OFF VENT FLOOR MIX NORMAL DEFROST MAX ORG/ WIRE PNK WIRE POWERTRAIN CONTROL MODULE (PCM) (RIGHT REAR OF ENGINE COMPT, THROUGH FIREWALL) RED WIRE RED/LT GRN WIRE RED/WHT WIRE SMART JUNCTION BOX (SJB) (BEHIND RIGHT SIDE OF DASH) TEMPERATURE CONTROL POTENTIOMETER VIO WIRE WHT WIRE YEL WIRE YEL/LT GRN WIRE