Defogger circuit for GMC Rally G3500 (1985-1996)

1995 VFTC BLK WIRE BLU WIRE BUS BAR GROUND FUSE BLOCK INSTR LPS FUSE GAGES FUSE GRY WIRE HOT AT ALL TIMES HOT IN START OR RUN HOT WITH HEADLIGHT SWITCH IN PARK OR HEADLIGHT LEFT DEFOGGER GRID OFF ON INDICATOR ORG/ WIRE PANEL LAMPS PNK LT WIRE PNK WIRE PPL PPL/WHT WIRE PWR/ACC CIRCUIT BREAKER REAR DEFOGGER SWITCH RIGHT DEFOGGER GRID SOLID STATE TIMER RELAY (ON BRAKE PEDAL SUPPORT BRACKET) WHT WIRE