Heater circuit for GMC Vandura Special G3500 (1985-1996)

AUXILIARY BLOWER MOTOR AUXILIARY BLOWER MOTOR RESISTOR (LEFT REAR OF CABIN, BEHIND REAR WHEELHOUSE) BLK WIRE BLOWER MOTOR BLOWER MOTOR RESISTOR/RELAY (AT HVAC CONTROL PANEL) BRN WIRE CONVENIENCE CENTER DK BLU WIRE DK GRN WIRE FUSE 12 FUSE 24 GRY WIRE HEAT BLEND DEF HEATER CONTROLLER HOT AT ALL TIMES HOT IN RUN HOT IN RUN OR START HVAC FUSE I/P FUSE BLOCK LT BLU WIRE OFF OFF LO MED HI ORG/ WIRE PPL REAR AUXILIARY HVAC CONTROL MODULE REAR AUXILIARY MODE VALVE AND SEAT ASSY (LEFT REAR INTERIOR) REAR AUXILIARY TEMPERATURE VALVE ASSY (LEFT REAR INTERIOR) RED WIRE TAN WIRE TEMP UNDERHOOD FUSE/RELAY CENTER RR HVAC FUSE VENT VENT MODE WHT WIRE YEL WIRE