Chevrolet Astro I (1985-2005) Heater circuit

1995 VFTC A/C RELAY AIR TEMPERATURE ACTUATOR (BEHIND RIGHT SIDE OF DASH, LEFT SIDE OF AIR DUCT) AUXILIARY HEATER BLOWER MOTOR AUXILIARY HEATER BLOWER MOTOR RESISTOR (LEFT SIDE OF VEHICLE, BEHIND "B" PILLAR) AUXILIARY HEATER BLOWER MOTOR SWITCH BI-LV VENT BLEND HEAT BLK WIRE BREAKOUT) BRN WIRE CONVENIENCE CENTER (BEHIND LEFT KICK PANEL) COOLANT BYPASS VALVE SOLENOID (BEHIND RECEIVER/ DRIER) DEF DK BLU WIRE FRONT BLOWER MOTOR FRT HVAC FUSE GRY WIRE GRY/BLK WIRE HI OFF HOT AT ALL TIMES HOT IN RUN HTR A/C FUSE 12 HVAC CONTROL ASSEMBLY I/P FUSE BLOCK (BEHIND LEFT SIDE OF DASH) LO MED LT BLU WIRE OFF ORG/ WIRE PPL RED WIRE RR HTR A/C FUSE TAN WIRE UNDERHOOD FUSE BLOCK (LEFT SIDE OF FIREWALL) WHT WIRE YEL WIRE