WITH THE PUMP RUN SWITCH 8501 WIRE FOR THE MASTER RELAY AND THE 8601 WIRE FOR THE PUMP RELAY DISCONNECTED FROM THE RELAYS, THE 15 AMP FUSE DOES NOT BLOW WHEN THE PUMP RUN SWITCH IS PUSHED.

IMPORTANT:
PUMP RUN SWITCH ONLY WORKS IN ONE DIRECTION
IGNITION SWITCH MUST BE OFF WHEN TESTING PUMP RUN SWITCH

Re-attach the 8501 pump run switch wire to terminal #2 of the master relay and push the pump run switch. Does the fuse blow?