Defogger circuit for Chevrolet Blazer S15 (1994-1998)

1995 VFTC BLK WIRE GAUGES FUSE 4 GRY WIRE HOT AT ALL TIMES HOT IN RUN, BULB TEST OR START HOT WITH LIGHT SWITCH IN PARK OR HEAD I/P FUSE BLOCK ILLUM FUSE 21 ILLUMINATION LAMP ON/OFF SWITCH ORG/ WIRE PNK WIRE PPL REAR DEFOGGER GRID REAR WINDOW DEFOGGER SWITCH RR DEFOG FUSE 8 SOLID STATE TIMING CIRCUIT