GMC Cab & Chassis C3500 (1985-2000) 7.4l (vin n), starting circuit

ACCY BATTERY JUNCTION BLOCK BLK WIRE BULB TEST CLUTCH START SWITCH (NORMALLY,OPEN CLOSES WHEN CLUTCH PEDAL IS DEPRESSED) (AT TOP OF CLUTCH PEDAL) FUSE BLOCK FUSIBLE LINK (12 GA. RUST) FUSIBLE LINK (16 GA- IGNITION SWITCH LEFT BATTERY LOCK OFF PPL PPL PPL CRANK FUSE (LOWER LEFT SIDE OF INSTRUMENT PANEL) PWR ACC CIRCUIT BREAKER RED WIRE RIGHT BATTERY RUN WIRE STARTER MOTOR STOP- HZ FUSE W/AUTO TRANS W/MAN TRANS YEL WIRE